Intelligent mining leads the new era of coal enterprise energy revolution

There is no flying coal dust, no mechanical roar, and no dense mining workers. Just in the beating of various data on the monitor screen, Wujin left the ground and ran to the ground continuously. This is the scene of intelligent mining of the ultra-thick coal seam working face 8222 working face that the reporter recently saw in Tashan Coal Mine. Advanced concepts, emerging technologies, and intelligent mining have opened a new era for Tongmei Group to lead the coal company's energy revolution.

    

The 15 million-ton intelligent comprehensive mining working face of Tashan Coal Mine of Tongmei Group is a key project of the" 13th Five-Year Plan "national key research and development plan in the field of" Key Technology Research and Demonstration of Intelligent Fully Mechanized Mining of 10 Million Tons of Extra-thick Coal Seams ". One of the ten scientific and technological research projects of Tongmei Group in 2019. Since it was officially put into operation on February 27, its advantages of safety, efficiency and convenience have appeared. "Said Ma Zhanyuan, Secretary of the Party Committee and Chairman of Tashan Coal Mine, Research on the key technologies of intelligent fully mechanized top coal caving mining of ultra-thick coal seams, and the creation of a demonstration project of intelligent fully mechanized caving mining face with an annual output of 15 million tons of ultra-thick coal seams in Tashan Coal Mine will play a leading role in solving the mining technology of extra-thick coal seams.

Intelligently put through the "nerve" of production management

The intelligent full-mechanized caving mining complete set for the 8222 working face was jointly completed by 29 institutions of higher learning, scientific research institutes, and domestic and foreign advanced mining equipment R & D and manufacturing manufacturers for overall design, selection and manufacturing, and has been widely used for long distances. A series of new technology and new equipment with high technological content and high safety factor, such as centralized liquid supply, hydraulic self-propelled equipment train, etc. Through the functions of online monitoring, one-button start-stop, sequential start-stop, etc., the automatic control of the working surface is fully realized. The automatic production mode supplemented by remote intervention has achieved the goals of unmanned follow-up operations, safety inspections, and remote remote control on the ground. This has enabled Tongmei Group to build a new data-oriented production management model and has taken a solid step forward. "Fang Zhigang, deputy secretary and general manager of the Party Committee of Tashan Coal Mine, said.

It is understood that the control system is based on the shearer's memory cutting, hydraulic support automatic follow-up, and visualized remote monitoring. It realizes the intelligent monitoring and centralized control of the comprehensive mining equipment on the ground and along the comprehensive monitoring center to ensure the work. The intelligent operation of the face has achieved continuous, safe and efficient mining of the working face.

Coal mining equipment replaces workers for underground mining. The implementation of this project has reduced the labor intensity of workers and freed them from dangerous working surfaces to relatively safe down-channel monitoring centers, which has reduced personnel and improved efficiency, and improved safety assurance capabilities. . Li Ruijin, the leader of the Tashan Coal Mine Intelligent Comprehensive Mining Team, said excitedly: "The comprehensive mining team originally had 20 people per shift. After implementing intelligent mining, less than 8 people per shift can complete the task, and the efficiency has increased by 50%. Coal production is Less people are safe, and now there are fewer people underground, which is of great significance to production safety.

Intelligent "sensing" coal mining process

The roadways and working faces more than 400 meters deep in the Mt. Tashan Coal Mine are covered with LED lights, bright as daylight. "This not only makes it easier for employees to walk, but also improves the clarity of the camera." Li Ruijin said while pointing at the camera installed on the top beam of the bracket. "This is our 'eye' downhole, and it is an important part of the video communication system. , Can clearly capture every minute movement of the equipment, observe the operation position of the shearer, and transmit it to the 'brain'-the monitoring center through the network. "

These are the" nerves "of the system. Through various sensors such as pressure and inclination, the hydraulic support can be prevented from tipping, filming, and falling. It can automatically complete the work of the work surface and the machine, precisely control the moving cylinder, and reduce the work surface Propulsion error. "Zhang Hui, director of the mine monitoring center, pointed to the sensors on the support, saying that each support controller and camera are nodes of the information network, and they automatically collect, count, analyze, and feed back equipment operating data at that time. The optical fiber is transmitted to the monitoring center for data analysis, and the results are used to improve production conditions and enhance the reliability of comprehensive mining.

Smart "brain" can't count it

Now open the remote control mode of intelligent coal mining." At the Tashan Coal Mine Dispatching Command Center, the operator sends instructions through 4G visual communication equipment.