The Solution forUnmanned Track Haulage System

Background

At present, the domestic underground rail transportation system is driven and operated by post personnel on site. Each train needs a driver and mine worker, and the process of locating, loading, driving and drawing can be completed through their mutual cooperation. Under this situation, it is easy to cause problems such as low loading efficiency, abnormal loading and great potential safety hazards. The underground rail transportation control system first originated in abroad in the 1970s. The Kiruna Underground Iron Mine in Sweden first developed wireless remote control trains and wireless communication technology, and successfully realized the wireless remote control of underground trains. Throughout three-year independent research and development and field experiments, Beijing Soly Technology Co., Ltd. at last put the automatic train running system online on November 7, 2013 in Xingshan Iron Mine of Shougang Mining Company. It has been running stably until now. The system successfully realizes workers can work in the ground control center instead of underground, and realizes the automatic operation of the underground rail transportation system, and gained the following achievements:

Realized automatic operation of underground rail transportation system;

In 2013, realized the remote electric train control system at 180m level in Xingshan Iron Mine, and won the first award of metallurgical mining science and technology award;

Applied for and obtained the patent in 2014;

In May 2014, the project passed the first batch of demonstration engineering acceptance of the Safety Technology “four batches” of the State Administration for Safety Management and Control.

Solution

The automatic operation solution of the underground rail transportation system developed by Beijing Soly Technology Co., Ltd. has been applied for and obtained the patent and has been conformably recognized by relevant national departments, which is enough to prove that this system successfully combines communication systems, automation systems, network systems, mechanical systems, electrical system, remote control system and signal system. The train operation command is carried out with the optimal driving route and cost-benefit accounting method, which significantly improves the utilization rate, capacity and safety of the railway line. Accurate train positioning is achieved through odometers, positioning correctors and speedometers. The train control system (SLJC) and the signal centralized closed system based on the wireless communication system realize the fully automatic operation of the underground rail transportation. The system integrated with the original transportation system in the mine, has expansibility, which meets the needs of different customers, and is suitable for underground mines with rail transportation.

System composition

The system consists of train dispatching and ore proportioning unit (digital ore distribution system, train dispatching system), train unit (underground train transportation system, automatic train protection system), operation unit (underground signal centralized closed system, operation console system, wireless communication system), ore loading unit (remote chute loading system, video monitoring system of remote chute loading), and unloading unit (automatic underground unloading station system and automatic cleaning system).

Figure 1 System composition diagram

Train dispatching and ore proportioning unit

Establish an optimal ore proportioning plan centered on the main chute. From the unloading station, following the principle of stable output grade, according to the ore reserves and geological grade of each chute in the mining area, the system digitally dispatches trains and blends ores; according to optimal ore proportioning plan, the system directly arranges the production plan, determines the ore drawing sequence and quantity of each chutes, and determines operating intervals and route of trains.

Level 1: Ore proportioning in the stope, that is the ore proportioning process beginning from scrapers excavating ores and then dumping ores to the chutes.

Level 2: Main chute proportioning, that is the ore proportioning process from trains loading ores from each chute and then unloading ores to the main chute.

According to the production plan prepared by level 2 ore proportioning plan, the signal centralized closed system directs the operation interval and loading points of trains. The remote-controlled trains complete the production tasks at the main transportation level according to the driving route and instructions given by the signal centralized closed system.

Figure 2. Frame diagram of the train dispatching and ore proportioning system

Train unit

The train unit includes underground train transportation system and automatic train protection system. Install the automatic industrial control system on the train, which can communicate with the console control system in the control room through wireless and wired networks, and accept various instructions from the console control system, and send the operation information of the train to the console control system. A network camera is installed on the front of the electric train which communicates with the ground control room via wireless network, to realize remote video monitoring of railroad conditions.

Figure 3 Train unit picture

Figure 4 Electric train wireless video

Operation unit

Through the integration of signal centralized closed system, train commanding system, precise position detection system, wireless communication transmission system, video system and the ground console system, the system realizes operating underground electric train by remote control on the ground.

Ground remote control operation: the train operator in the control room issues a ore loading application, the dispatcher sends ore loading instructions according to the production task, and the signal centralized closed system automatically changes the traffic lights according to the line conditions after receiving the instruction, and directs the train to the designated chute to load. The train operator remotely controls the train to run to the designated position through the handle. The system has the function of constant speed cruise, and the operator can set different speed at different intervals to reduce the workload of the operator. After reaching the target chute, the operator remotely conducts ore drawing and move the train to the right position, ensure that the loaded ore quantity meets the process requirements; after finishing ore loading, apply for unloading, and after receiving the application, signal centralized closed system automatically judges the railways and command the train to the unloading station to unload ores, then completing a loading and unloading cycle.

Fully automatic operation: According to the command information from digital ore proportioning and distribution system, the signal centralized closed system automatically responds, commands and control signal lights and switch machines to form the running route from the unloading station to the loading point, and from the loading point to the unloading station. The train fully automatically runs according to the comprehensive information and commands of the ore proportioning and train dispatching system and the signal centralized closed system. In running, based on the precise train positioning system, the specific position of the train is determined, and the pantograph is automatically lifted and lowered according to the specific position of the train, and the train automatically runs at fixed speeds in different intervals.

Figure 5 Signal Centralized Closed System

Figure 6 Operator Is Driving The Train

Figure 7 Main Picture of Remote Control

Loading unit

Through the video images, the operator operates the ore loading control system to realize remotely ore loading in ground control room.

Figure 8 The Picture of Selecting the Feeders

Figure 9 Loading Unit

When the train arrives at the loading chute, the operator selects and confirms the needed chute through upper-level computer display, to connect relationship between the controlled chute and the ground control system, and issues commands to control the selected chute. By switching the video monitoring screen of each feeder, the vibrating feeder and the train are operated in a unified and coordinated manner, so as to complete the remote loading process.

Unloading unit

Through the automatic unloading and cleaning system, the trains complete the automatic unloading operation. When the train enters the unloading station, the automatic operation control system controls the train’s speed to ensure that the train passes through the curved rail unloading device at a constant speed to complete the automatic unloading process. When unloading, the cleaning process is also finished automatically.

Figure 10 Unloading station

Figure 11 Unloading Unit Picture

Functions

Realize no one working in the underground railway transportation process.

Realize automatic train running and improves the system operation efficiency.

Effect and economic benefit

Effects

(1) Eliminate potential safety hazards and make the train running more standardized, efficient and stable;

(2) Improve the transportation, production automation and informatization level, and promote management progress and revolution;

(3) Improve working environment and improve the transportation production efficiency.

Economic benefits

(1) Through the optimized design, realize optimal ore proportioning, reduce train number and investment cost;

(2) Reduce human resources cost;

(3) Improve transportation efficiency and benefits;

(4) To ensure stable ore quality;

(5) Reduce the power consumption of trains.

EPCSolution for Unmanned Track Haulage System of Underground Mines

Background

With the transformation and upgrading of mines, mine production has shifted from the original extensive production mode to a large-scale and refined green mine production mode. This further requires professional management and technical control. Through the precision management, fine technology and operation, the professional team organically combines the links in the mining development process to maximize the resource utilization rate and the resource benefit conversion rate, and reduce the operation risk of mining enterprise, realize efficient integration of resources and maximize the profit of mining enterprises.

The EPC of mining projects is a transformation of the mining development system. Choosing EPC can free mine owners from busy work to do more valuable things. EPC and "turnkey" projects are two of the more common mine contracting modes.

1. EPC, the abbreviation of design, procurement and construction general contracting project, means that the company that signs the general project contract undertakes the design, procurement, construction, trial operation services and other work of the project in accordance with the contract, and is fully responsible for the quality, safety, construction period and cost of the contracted project.Work, and fully responsible for the quality, safety, construction period and cost of the contracted project.

2. Turnkey project refers to a general contracting model with a wider scope of business and responsibilities formed by the extension of the general contracting of engineering design, procurement and construction projects. Turnkey projects not only contract the construction and implementation tasks of the project, but also provide comprehensive services for the pre-work and operational preparation of construction projects, the scope of which includes:

(1) Research on investment opportunities in the early stage of the project, project development planning, construction plan, feasibility study and economic evaluation;

(2) Engineering survey, overall planning scheme and engineering design;

(3) Project procurement and construction;

(4) Project mobilization preparation and production and operation organization;

(5) Planning and implementation of project maintenance and animal husbandry management.

Relying on its own advantages and cooperation with Shougang Mine Construction Company and other units, Beijing Soly Company has opened the EPC general contracting mode of track haulage system for underground mine, offering customers a faster, more practical and applicable contracting mode.

The basis of technical plan preparation:

(1) Mine feasibility study and initial design;

(2) Relevant drawings and demand analysis;

(3) Requirements of relevant national and industry standards and regulations.

The scope of general contracting project tendering:

Transportation system, loading system, unloading system, wind and water piping system, power system, lighting grounding system, network communication signal system, video monitoring system, unmanned driving control system (with debugging) in the middle section of transportation, the specific content is as follows:

Transportation system: procurement and construction of rails, rail switch, rail scales, and switch machines; procurement and construction of ballast and sleepers; procurement and installation of lineation;
design, procurement, construction of wagons; procurement and installation of pusher, stoppers and cradles for horse head gates.

Loading system: design, procurement and construction of loading station and material level detection system.

Unloading system: design, procurement and construction of unloading station (including drive device) and material level detection system.

Wind and water pipeline system: Procurement and construction of compressed air self-rescue pipelines in the middle section transportation. Procurement and construction of water supply and rescue pipelines in the middle section transportation. Procurement and construction of local ventilation equipment.

Power system: cable laying from the central substation to the substation in the mining area; installation and commissioning of high and low voltage cabinets and transformers in the substation; cable laying from the substation to the traction network; power supply cable laying and installation of electrical equipment in the disaster shelter chamber in the middle section transportation. electrical power supply and distribution installation and commissioning of electric locomotive and wangons maintenance chamber; electric hoist installation and commissioning in chamber; optimal design, procurement, installation and commissioning of traction rectification system at transportation level; procurement, installation and commissioning of traction networks.

Lighting and grounding system: procurement, installation and commissioning of equipment and materials for lighting and grounding systems.

Network communication signal system: design, procurement and construction of wireless network, wired network and traffic signal system.

Video surveillance system: design, procurement and construction of video surveillance (ore loading, transportation, unloading, track switch, traction substation, auxiliary shaft horse head gate, etc.).

Unmanned control system (unmanned train system): realize the full combination of signal centralized closed system and unmanned train system at the transportation level, and finally realize the unmanned train operation in the whole process of loading, transportation and unloading; including the purchase and installation of electric locomotives, wagons, etc.

Solution for Remote ScraperDriving System

Background

According to the intelligent mine construction plan: intelligent mining aims at unmanned control and autonomous operation of single equipment. On the basis of underground communication platform having been constructed, seize the favorable opportunity of the rapid development of modern information technology represented by the current Internet of Things, big data, cloud computing, virtual reality, blockchain, 5G, etc., and take the single equipment in the mining area as a breakthrough, research and implement remote control and automatic driving of key equipment, provide a benchmark for the construction of mining intelligent mines, and enhance the influence of the domestic mining industry .

Among the stope operation equipment, the electric scraper is at the heart and is the ruler of the mining capacity of the mine. Its automation level has strong reproducibility and promotion; at the same time, due to its poor working environment and heavy production tasks, it is urgent to liberate the scraper drivers, practice the essential safety concept of "The less people working underground the safer" in underground mining, and put forward the research on transformation for the remote scraper driving.

Target

The target is to implement transformation for remote scraper driving, so as to solve the contradiction between the increasing production tasks and the bad on-site environment.

System composition and architecture

Video Module

The video system is a key link in remote driving which is the only way the operators to understand the situation on site. The system uses high-definition vehicle-mounted cameras and other equipment to achieve this function.

Scraper Excavating Picture

Anti-collision radar module

LIDAR, ultrasonic radar and domain controller cooperate to complete the anti-collision function. Install the lidar on the edge of the scraper to realize this function.

Remote driving positioning module

The real-time position of the scraper is confirmed by the positioning module, which is convenient for remote and intuitive operation.

Vehicle-mounted control box

The vehicle-mounted control box is responsible for collecting the running status information of the scraper, controlling the output of operation commands, and exchanging data with the remote console. The vehicle-mounted control unit controls the action of the bucket, big arm, left and right steering, and running direction, and at the same time monitors the status of the scraper, collects system information, and makes intelligent judgments to assist the driver in operation;

Handheld remote control module

The handheld remote control module includes a handheld remote control terminal and a remote control receiving terminal, which can realize remote range of visibility control.

Communication transmission module

The communication transmission undertakes all communication tasks between the remote control operation platform and the scraper, including the control communication between the platform to the scraper, the communication of uploading the equipment status information to the operation platform status monitor, and the communication of uploading information from the video system to the operation platform video monitor.

Remote control operation platform

As a display platform for the entire system, the remote control console mainly collects all handle and switch data, the scraper video, the display the running data of the scraper, and the navigation display of road information. The seat adoptes a six-position adjustable seat for improved operator comfort.

Effect and benefit

The picture of the remote scraper driving system

The system is stable, fast in response and high in accuracy, which can meet production conditions on site. After the driver is trained, the remote driving efficiency reaches 81%, and the efficiency will be further improved after subsequent proficiency.

Changing the driving from underground on-site to remote control, prevent four operators from working underground 4, eliminate bumps during driving, keep away from dust, toxic and harmful gases, etc., reduce the risk of occupational diseases, and operators facing roof falling and improve the intrinsic safety level.

Solution for intelligent Underground Crushing Control System

Background

Establish an automatic control system from the underground crusher to the main shaft lift, the entire system can be centrally monitored and managed by the ground control center, and the equipment can be automatically interlocked and protected to ensure safe, stable and efficient operation.

Target

Realize unattended underground crushing system;

Achieve seamless link with the main shaft lift.

System composition

The control station is equipped with a PLC control system, which is responsible for controlling and managing the heavy-duty plate feeder, crusher, feeder, belt conveyor and other equipment of the crushing system. It is connected with the main control (dispatching) system through redundant Ethernet to accept the operation instructions from the main control room. The upper part of the ore bin has the material level alarm and interlock control function; the motor running states of electrical equipment such as the crusher are monitored, and the interlock control is automatically started and stopped. The lower part of ore bin has functions of level indication, recording, alarm and interlock. The motor running states of electrical equipment such as the conveyor are monitored, and the interlock control is automatically started and stopped. It can indicate and record the dust concentration at the inlet and outlet of the dust collector, and alarm the high and low material levels of the dust collector. At the same time, it can set up the necessary signal systems such as start and stop warning signals, equipment operation status signals, production contact signals, and accident signals.

Effect

Seamlessly link with the main shaft lifting to complete the production interlocking;

Intelligent crushing operation mode to improve production management efficiency;

High-precision material level detection ensures smooth and stable production;

Friendly interface, simple operation, and one-key start and stop for production.

Solutionfor Hoisting Control System

Background

The hoisting system is an important link in the production process. Underground ores are transported to the bottom underground, and then lifted to the ground through the hoisting system. The hoisting system is the throat of mine transportation.

System composition

The control system of the hoister mainly includes two parts: the main control system and the monitoring system. The main control system is responsible for coordinating and managing the operation and alarm tasks of the hoister, and realizes travel control based on detecting the exact position and speed of the hoisting container in the shaft; the hardware and softwareof monitoring system is independent of the PLC of the hoister main control system, which mainly completes judging sliding rope, over-rolling and over-speed, and realize the position and speed monitoring in the whole lifting process.

System effect

Seamlessly link the crushing system, complete the production interlocking operation;

A variety of operation modes are selected to improve the efficiency of production management;

Data detection in the whole process ensures smooth and stable production.

Solution for Intelligent Ventilation Control System

Background

The main purpose of the ventilation system is to continuously deliver fresh air to underground, dilute and discharge toxic and harmful gases and dust, adjust the microclimate in the mine, create a good working environment, ensure the safety and health of miners, and improve labor productivity. Establish an intelligent underground ventilation control system, realize underground fans to be monitored and managed by the ground control center, collect wind speed and pressure data in real time, intelligently adjust the air volume, ensure to transmit underground fresh air and discharging harmful gases, to create a good working environment, and ensure personnel safety and health.

Target

(1) Adjust the underground climate and create a good working environment;

(2) Remote monitoring fan station, equipment chain protection, alarm display;

(3) Timely collecting harmful gas data, and alarming for abnormal situations;

(4) Automatic control of air volume adjustment, ventilation on demand.

System composition

Gas monitoring sensors: Install harmful gas collection sensors and collection stations in return airway, fan outlet and working face to monitor gas environment information in real time.

Wind speed and wind pressure monitoring: Set wind speed and wind pressure sensors at the fan outlet and roadway to monitor ventilation data in real time. The fan station is equipped with a PLC control system to collect ambient gas, wind speed, and wind pressure data, and combine with the control model to provide suitable ventilation volume data to automatically adjust the air volume.

The current, voltage and bearing temperature of the fan motor: the usage of the motor can be grasped by detecting the current, voltage and bearing temperature of the fan. There are two ways to realize the remote centralized control and local control of the fan in the station. The fan is equipped with start-stop control, forward and reverse control, and sends signals such as wind pressure, wind speed, current, voltage, power, bearing temperature, motor running status and faults of the fan motor to the computer system to feed back to the main control room.

Effect

Unattended underground ventilation system

Remote control equipment operation;

Real-time monitoring equipment status;

Online monitoring equipment, sensor failure;

Automatic alarm, data query;

Intelligent operation of ventilation equipment;

Adjust the fan speed according to the demand to meet the demand for air volume.

Solution for intelligent drainage control system

Background

Establish an automatic control system for underground drainage, to realize centralized monitoring and management of the entire system by the ground control center, equipment protection control, and intelligent start- stop operation mode of equipment to ensure the safe and efficient operation of the entire system.

Target

Remote start, stop and online monitoring of groundwater pumps in the ground control center to realize unattended pump room. Design pumps to automatically work in turn, so that the utilization rate of each pump and its pipeline is evenly distributed. When a pump or its own valve fails, the system automatically sends out sound and light alarms, and dynamically flashes on the computer to record the accident.

System composition

Set up a PLC control station in the underground central substation which is responsible for the control and management of drainage pumps. Detect pump current, water level, the pressure and flow of water supply pipelines, etc. The PLC automation control system is connected with the main control (dispatching) system through redundant Ethernet ring network. Realize the modern production management mode of the remote centralized control room.

Data monitoring

In real time monitor the water level of water tank, water supply pressure, water supply flow, motor temperature, vibration and other data.

Control function

Flexible and diverse control methods meet the different needs of normal production, commissioning and maintenance, and realize centralized monitoring in the ground command center.

Optimization Strategy

Automatic job rotation:

To prevent some water pumps and their electrical equipment from being worn out too fast, damp or other failures due to long-term operation, when emergent start is required but pumps cannot be operated which affects normal work, taking equipment maintenance and system safety into consideration, design automatic pump rotation, and the system automatically records the running time of pumps, and determine the number of pumps to be turned on by comparing the recorded data.

Avoidance peak and fulling valley control:

The system can determine the time of turning on and off pumps according to the power grid load and the time period of the power supply price in the flat, valley and peak period stipulated by the power supply department. Try to work in the "flat period" and "valley period", and try to avoid e working in "peak period".

Effects

Pump rotation system to improve system reliability;

"Avoidance peak and fulling valley" mode to reduce power consumption;

High-precision water level prediction ensures smooth and stable production;

Solution forUnattended Substation System

Background

The underground substation is an important component of the underground power supply system. The safe operation of the substation is related to the safe production and economic operation of the enterprise. Facing the complex geological conditions and harsh working environment underground, the unattended substation is to meet the development needs of the enterprise, which can effectively reduce the personnel number and reduce costs.

Target

In order to improve the automatic control level of the whole mine, improve labor productivity, monitor the production equipment, it should take corresponding technical measures to monitor electrical equipment and system parameters such as current, voltage, power, etc., as well as the operating status, forecast and monitor breakdown signals which would be sent to the control room through network.

System composition

Substation is set up at each level with a collection control station, which collects various data from the comprehensive protection system of the central substation and the multi-functional monitoring device system installed in the substation, and transmits the electrical data in distribution circuits such as current, voltage, power, etc. to the control system.

Communications network

Collect data from comprehensive insurance system and multi-function meter through RS485 or Ethernet

Acquisition control station

A control station is set up in the substation at each level, which can process the collected information, and can remotely stop and transmit power through the control station.

Monitor host

A monitoring host is placed in the surface control room to display real-time data of substations underground, which is used to set parameters, display alarms, remotely control power transmission, etc., and create production electricity reports.

System effect

Unattended high and low voltage distribution rooms;

Automatic data collection;

Remote power stop/start, reduce the labor intensity of personnel.

Solution for the Intelligent Control System for

Underground Slope Ramp Traffic

Background

Safety production has always been the top priority in the mining production. With the expansion of the underground mining range and the increase of transportation tasks, the number of underground transportation vehicles has gradually increased. If there is no reasonable management and control system for trackless vehicles, the vehicles cannot understand the traffic situations, which will easily cause the vehicles to be blocked in a certain area, resulting in frequent reversing of vehicles, a waste of fuel, low transportation efficiency, and accidents. Therefore, a flexible, adaptable, safe and efficient traffic control system is particularly critical.

Target

Three traffic signal machines are set at the entrance and exit of the ramp and the entrance and exit of the passing track. The signal system adopts automatic and manual two-way control. Via ground induction coils and WIFI equipment positioning technology,vehicles are measured which can be tracked and displayed throughout the whole process. The communication between dispatching room and vehicles, the communication among vehicles directly is connected by WIFI. The system realizes the unmanned on-site command and fully automatic operation mode.

System composition

(1) Entrances, passing tracks, and three -way intersections, including main road-- > auxiliary road, auxiliary road-- > main road, drift- > auxiliary road, all need to install no straight-travel and straight-traveling signs. And install no left and no right signs at the fork road.

(2)Install ground induction coils at key points which are used to detect the running conditions of vehicles. Since there is a full coverage of the WIFI signal in the ramp, positioning tags can be used to assist positioning vehicles. Based on the above detection, the system logically judges and directs the vehicle to run.

(3) The signal lights are controlled by Siemens PLC. Considering that the up-vehicle has the priority to pass the road section. When it is detected that there is an upward vehicle passing by, the signal light on the opposite road section will sign stop to make the downward vehicle enters the passing tack for waiting.

(4) The system also has the following functions:

1. Real-time display the ramp map, ground induction coils, the distribution of signal machines in the ramp, and the status of signal lights.

2. Display the direction of vehicles in each section, whether there are vehicles in the section and the number of vehicles.

3. Display the alarm screen: the system will automatically alarm if there is vehicle violation or the vehicle stays in the ramp too long. Alarm content includes: time, location, type.

4. Manual control functions of signal lights. When abnormal operation occurs in the ramp, manual control can be performed to switch the signal.

Effects

Reliable vehicle identification technology improves the system safety factor;

Flexible traffic rules meet the needs of underground transportation;

Intelligent traffic control mode to promote innovation in production management;

General industrial control system is expandable, simple and practical.

The six systems forsafety and escaping from danger

Background

To fully implement the Scientific Outlook on Development and follow the concept of common development, all systems must be safe in metal and non-metal mines. Ensure that the construction and implementation of the "six systems" adhere to mutual coordination. Ensuring personnel safety is the premise and paying attention to the life and health of employees. Based on underground safety production data, voice, and images, establish a comprehensive management platform for safety production, display underground safety production data intuitively and in real time, fully control the situation of underground safety production, improve disaster-resistance and risk-avoidance capabilities, prevent production accidents, and ensure underground mining production.

Target

The system is constructed based on the guiding ideology of "practical, reliable, advanced and economical", meets with relevant regulations and specifications and combines the actual needs of underground mine to realize the high-precision positioning of personnel (vehicles) underground, the tracking and analysis of personnel (vehicles) activity trajectories, and management of access to key areas/restricted areas, etc., to realize the integration of monitoring and management, improve the safety production management level of mining enterprises, improve the informatization level of mining enterprises, and lay the foundation for constructing intelligent mines. Realize the integration and linkage with safety monitoring, emergency broadcasting, video monitoring and other systems, improve the level of safety prediction and early warning, and realize in-depth analysis and comprehensive utilization of safety monitoring and monitoring information. To save costs, strengthen production safety management, improve work efficiency, and meet the needs of mine safe production, it does not only meet the current production needs, but also conform to the mainstream development direction of future mines, and maintain the advanced nature within a certain period of time.

Functions

Location and tracking of underground personnel;

Two-way voice communication above and below ground;

Real-time online monitoring of key underground equipment (such as fans, pumps, etc.);

Underground real-time production data monitoring and analysis;

Video monitoring and surveillance of key underground locations;

Monitoring and monitoring of underground water supply, air supply and power supply;

Underground local fan interlock control to achieve on-demand air supply;

The refuge chamber guarantees emergency avoidance in the event of a disaster;

The compressed air self-rescue system provides sufficient air to meet the breathing needs of refuge miners;

The water supply rescue system provides sufficient living water for refuge miners.

Effect

Accurate positioning to improve disaster reduction and rescue capabilities;

Real-time monitoring, timely grasp of production information;

Platform management, unified production command and dispatch;

Practical system, cost-effective, safe and reliable;

Standardized construction, in line with national rules and regulations.

Solution forGround Dry Separation ControlSystem

Background

It is transported from underground to the surface bin through the main shaft hoisting system, and transported to the ground dry-separation workshop through the conveyor system locating at the lower part of the bin. The automatic ground dry- separation control system is established to realize the control center can centrally monitor and manage the entire system, automatically interlocked, protect and control the equipment to ensure the safe, stable and efficient operation of the entire system.

Target

(1) Centralized control, unattended on-site;

(2) The unloading trolley automatically distributes material without manual intervention;

(3) Automatic ore loading;

(4) Realize "one button start and stop", interlock protection and fault warning of process equipment.

System composition

The PLC control station for dry-separation is responsible for the control and management of the dry-separation system equipment. It is connected with the control (dispatching) system through the redundant Ethernet ring network, and accepts the operation instructions from the control room.

The dry-separation system has three basic operation modes: manual operation on site, single equipment operated by computer, and computer interlocked operation. It can realize indicate, record, alarm and interlock the material level in ore bins; monitor the running state of belt conveyor motor; automatically start, stop and interlocked control the belt conveyors.

Effects

Perfect equipment protection and detection, production in interlocking operation;

Automatic running of the whole process, and unattended site;

A variety of control models to improve production management efficiency;

Data detection in the whole process to ensure smooth and stable production.

Solution for Mobile device informationcollection system

Background

Establish a data channel for the ground main control room to issue scheduling instructions to single equipment and collect information. A wireless AP base station based on WIFI technology is installed on equipment, and WIFI positioning labels are arranged in the main operating access where the equipment works to locate the scraper in its working area and record the running track of the scraper.

Target

At present, in abroad, single equipment has been centralized monitored and remote controlled from the ground. So at first, it should collect the data from underground production and mining equipment timely, and secondly carry out wired or wireless remote control. In order to grasp its operation, as well as further remote monitoring and control, a communication interface is installed for the single equipment which is connected and communicated with the main control room through wired and wireless means whichlays the preliminary foundation work for realizing ground remote control operations.

Highlights

Realize the centralized monitoring and remote control operation of single equipment on the ground.

Functions

Wireless collecting equipment operation data;

Real-time positioning the work area.

Effect

Remote control operation improves working environment;

Record the running track, optimize the operation route, and improve the operation efficiency.

Solution for CCTV system

Background

With the continuous improvement of mining automation and the production technology, in order to achieve the purpose of high production, high efficiency and safe production, video monitoring of important links and places of safe production is required. Through the video monitoring system, personnel in the ground control room can intuitively monitor and record the production situation at underground work site, timely find operation against rule to prevent problems, and escort the safe production in mines.

Target

Install video cameras at key points underground which monitor the production situation underground, in order to find problems quickly and timely. Ensure the security, authenticity, uniqueness, integrity and reliability of monitoring information.

composition

In order to strengthen safety management and monitor the production situation underground, surveillance cameras are set up at key points. A video monitoring system in the hoisting system is set up to in order to monitor the wellhead dispatching room, the hoisting winch room, entry and exit sites for hoisting personnel, the wellheads of different levels, the well bottom, the middle horsehead gate and the switchyard. And a video monitoring system is installed in the main shaft hoisting and loading chamber (in loading state), the main shaft hoisting and unloading point, the ground dry separation and drawing, the main shaft unloading chamber, the underground powder magazine and other important parts. The video equipment installed in the underground powder magazine shall meet the requirements of the corresponding explosion-proof level.

All images of CCTV monitoring system are recorded and stored, and the storage time of hard disk is not less than 3 months. A permanent storage medium backup is performed every 2 months. The video surveillance system has on-site analog video display, which is converted into digital signals at the same time to realize network data display, transmission, storage, processing, printing and other functions.

Optical fiber network transmission is adopted to ensure that the signal is not disturbed and distorted. Satisfy long-distance transmission.

System Highlights

Remote video surveillance, personnel in the ground control room can keep abreast of real-time conditions underground;

Visually monitor and record the safety production situation of the underground work site, and prevent accidents before they occur.

Monitoring signal is digitally transmitted to ensure picture quality.

Solution for Wired Communication System

Background

According to the technical requirements of "AQ2036-2011 Construction Specifications for of Underground Mine Communication System for Metal and Non-metallic Underground Mines", for the purpose of direct communication in production, scheduling, management, rescue and other links, a reliable communication system is set up underground, including: wired Communication system, broadcast intercom system, wireless communication system.

Target

By installing wired and wireless communication equipment underground, the overall goal of direct communication in production, scheduling, management, rescue and other links is achieved. Two-way voice communication can be realized between the wired and wireless communication system. Ensure that the underground communication is stable, reliable and smooth.

System composition

Based on the needs of safety and production underground, a communication room is set up in the ground production command center, and digital program-controlled switches and related equipment are installed to be responsible for wired communication between all production positions in the entire whole mine. By distinguishing different calling functions in different point location, configure inner calls and outer calls. Taking into account reliability and safety, two main cables are laid from the telecommunication room of the production command center to the underground, one for use main and the other for standby. Two ends of both the main cables are connected with relative distribution plants which realizes Realize the backup of wired communication. 50 pairs of cables of the main cable directly are connected to the distribution equipment at -330m level from the auxiliary shaft, thus extending to the upper and lower parts from -330m level respectively, covering the entire underground area. 50 pairs of standby cable enter underground from the ramp, and enter the -330m level and the lower level from the return air shaft of the chute and crushing system through the -180m level, so that the communication cable line is divided into two communication cables, which enter the underground wiring equipment from different shafts, to ensure that any one of the communication cables fails, and the other communication cable can bear the needed communication capacity.

In main and auxiliary shaft hoist rooms, underground parking lots, middle section mining area, horsehead gates at each level, loading and unloading points, transportation dispatching room, underground central substation, mining area substation, water pump room, underground refuge, ,digging working face, blasting evacuation site, etc, there are special telephones or communication telephones directly connected to the mine dispatching room. The underground communication terminal equipment has the functions of waterproof, anti-corrosion and dust-proof.

Functions

Two-way voice and non-blocking communication between the communication terminal equipment and the control center;

Realize direct communication in production, scheduling, management, rescue and other links;

It has the functions of group call, all call, selective call, forced release, forced insertion, emergent call and monitoring initiated by the control center;

Able to store backup communication history and query;

Realize the recording function of automatic or manual activation of the wired communication system;

It can store backup communication history records which can be queried

Effect

Integrated dispatching platform realizes converged communication

Realize video linkage and remote command;

Save video, to ensure the authenticity and integrity of the process;

With wireless video access function, it can collect video images from mobile devices.

Solutions for personnel and vehicle positioningsystem

Background

With the state’s increasing requirements for safe production in mining enterprises and the needs of mining enterprises' own development, in order to further strengthen the supervision and management of safe production and prevent and reduce production accidents, according to the provisions of GB16423 "Safety Procedures for Metal and Non-metallic Mines", if more than 30 people go down underground, a personnel positioning system should be set up, and the personnel going down underground should carry the identification card.

Solution

With optical fiber wired network as the backbone and the wireless network as the extension, several AP (base stations) are set up underground to cover the underworking via the wireless network. Use mining mobile phones and enterprise fixed phones to realize functions such as voice and dispatch; use WIFI identification cards to realize wireless positioning functions of staff and important equipment; realize the integration of wireless and wired dispatching and communication between ground and underground; integration of equipment, personnel information monitoring; integration of comprehensive data transmission. The personnel positioning network, voice call network, and safety production monitoring network are integrated into one network; the wireless and wired dispatching and communication between ground and underground are integrated.

Information is shared via networking to provide real-time monitoring information for departments and leaders at all levels, and provide basis for decision-making and command. The mobile target positioning and tracking technology can enable the ground management personnel to comprehensively and timely grasp the number and distribution of personnel, vehicles and equipment in the underground and the entire mining area.

System functions

Adopt Wi-Fi and VOIP (Voice over Internet) technology to realize the integration of ground and underground communication, integration of wired and wireless, integration of dispatching communication and administrative communication;

Electronic signage based on Wi-Fi technology can perform real-time dynamic management, attendance, and necessary trajectory statistics for personnel, vehicles and important materials entering the work area; mine target positioning and tracking: mine targets include personnel, vehicles, and some moving objects. equipment, etc.;

Multiple systems share the main network, which can be combined into mine informatization construction, reduce construction volume and save money.

system effect

Life safety monitoring to enhance mine safety management;

A variety of communication integration to achieve data sharing;

Movement tracking, track playback, real-time control;