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Application and improvement of coal mining automation technology equipment

source：Central feeding system
Author：Central feeding system
time：2020-08-22 17:26:20

Abstract: With the development of science and technology, the working technology of coal mines has gradually improved. The use of automatic control technology for fully mechanized mining faces in coal mines can effectively increase the mining rate of coal, not only to ensure the personal safety of the staff, but also to increase the recovery rate of the working face. This article is an exploration of the application and improvement of automation technology and equipment for fully mechanized coal mining face.

Keywords: working face; automatic collection; automatic equipment; application strategy

Coal is the main content of energy in my country, and it has always been at the top of my country's energy use list. However, the mining of coal mines often requires the collection and mining of coal resources hundreds of meters or even thousands of meters underground, which poses a great safety threat to the safety of the workers in the mines. Moreover, once a coal mine accident occurs, the probability of survival of the workers in the mine is very low. Even though the current coal mine has adopted automation technology, it still requires workers to go down to operate.

1 Importance of the application of automation technology in fully mechanized coal mining face

1.1 Improve personnel safety

The application of automation technology in fully mechanized coal mining face can greatly improve the safety of workers to a certain extent. In the content of traditional coal mine work, the production process of coal mines is very difficult. Mine workers usually need to go down to the deepest part of the mine to carry out mining operations. However, the dangers and accidents below the mine are also very unpredictable. Mine accidents are mostly groundwater torrents, mine collapses, etc. These accidents have minimized the survival rate of workers in the mines. The application of automation technology for fully mechanized coal mining faces can not only solve this problem, but also greatly reduce it. The work intensity of the staff in the mine is improved, and the survival probability of the staff is improved to a certain extent.

1.2 Improve mining efficiency

Another important significance of the application of automation technology in fully mechanized coal mining face is to change the mining method in the coal industry to a certain extent, improve the efficiency of coal mining, and create more economic benefits for coal enterprises. This is all because the application of automation technology in fully mechanized coal mining face not only realizes the optimization of coal mine human resources allocation, increases coal production in the same unit time, but also effectively reduces the excavation deviation caused by human operation and improves coal mining. quality. And then improve the efficiency of coal mining [1].

2 Technology of fully mechanized coal mining face

2.1 The development status of automated mining technology

There are four basic key technologies in the coal mine's fully mechanized mining face automation system, namely: shearer automation control technology, hydraulic support electro-hydraulic control technology, scraper conveyor automation control technology, and coal mining environment visual monitoring technology. These four technologies together form the automation technology system for fully mechanized coal mining faces. However, the current development status of automated mining technology for fully mechanized coal mining faces is still in a semi-manual and semi-intelligent state. Many underground operations still require workers to go down the mine. Perform real-time operations.

2.2 Application benefits of automated mining technology

The application of automation technology for fully mechanized coal mining face in coal mining technology reduces the labor cost of coal mining enterprises and completes mining work with high efficiency and high quality. In addition, the maintenance of automation equipment is fast and sustainable. For some thin-layer coal mining resources, it can even be collected in a 24-hour shift system, which improves the mining cycle time of coal mining enterprises and speeds up the turnaround time of the coal mine return cycle. Coal mining enterprises obtain greater economic benefits [2].

Application of equipment in 3A coal mine B comprehensive mining face

3.1 Basic situation of fully mechanized coal mining face in coal mine B of A coal mine The length of the fully mechanized mining face of coal mine B is 350 meters, the height difference between the head and tail is 4 meters, the mining height range is 6.5-7 meters, and the average mining height is 6.8 meters. Propulsion length is 5,910 meters.

3.1.1 Shearer A coal mine's fully mechanized mining face equipment adopts the Eickhoff company SL1000 shearer. The total installed power of this shearer reaches 2590KW and the maximum traction speed can reach 33m/min. The capacity is 6000t/h.

3.1.2 The power of the scraper used in other fully-mechanized mining face equipment of coal mine A and B is 3*1400KW, the power of the transfer machine can reach 1000KW, the power of the crusher can reach 700KW, and the hydraulic pump station uses S500 produced by RIM. (S300) pump station, the power of the emulsification pump is 4*375KW, and the power of the spray pump is 3*132KW.

3.2 Centralized control plan of A coal mine B fully mechanized mining face

The centralized control system of fully mechanized mining face used in coal mine B of A coal mine completely reformed the bottom equipment of the entire working face. By setting up a centralized control room at the head of the fully mechanized mining machine, and installing an intrinsically safe centralized control host and an explosion-proof and intrinsically safe data server, the power supply, three machines, pumping station, coal machine, communication, drainage, etc. Integrated monitoring of equipment. At the same time, the introduction of Martial's centralized control and wireless remote control to realize the integrated inspection control of Martial's three posts, not only can reduce 2 operators (1 console electrician, 1 nose monitor), but also reduce 50% of the on-site cable laying, reducing 6 sets of main control equipment along the trough, so as to realize the power supply of the whole working face and the equipment train, and the wireless remote control of the three machines, pumping station, coal machine, communication, drainage and other systems.

Centralized control hardware for comprehensive mining face of 3.3A coal mine B

The centralized control system of A coal mine B comprehensive mining face is composed of KXH18 (H) mine-used intrinsically safe programmable controller and KJD127 (B) mine-used explosion-proof and intrinsically safe computer. Install KXH18 (G) mining intrinsically safe modular controllers on pumping station systems, conveyors, crushers and other equipment, while supporting the use of DXJ127/18 mine explosion-proof and intrinsically safe DC power supplies, KTK16 (D) mining Intrinsically safe emergency stop broadcast telephone, KHJ16 mine-used intrinsically safe emergency stop lockout, KZC127 mine-used explosion-proof and intrinsically safe signal converter. The three machines (reprinter, crusher, scraper conveyor) control remote control, pump station system, power supply system remote controller, and coal machine controller all use FYF35 mining intrinsically safe remote control transmitter.

3.4 Utilization of A coal mine B fully mechanized mining face

The comprehensive mining work of coal mine A and coal mine B has been optimized for coal mining machines, hydraulic supports, scraper conveyors, crushers, hydraulic pumping stations, spray pumps and power supply systems, which not only realizes centralized control and remote control of equipment, but also strengthens Equipment protection, system failure self-check, emergency shutdown lockout and other functions. It also carried out the consolidation operation of multiple positions, realized the multi-functionality of employees, achieved the purpose of optimizing staffing and strengthening automatic management. At the same time, it effectively improves the safety of mine power supply, efficient management of equipment, and promotes the efficient production of coal mines. Therefore, the improvement of comprehensive mining technology in xx coal mine cannot be separated from the improvement and improvement of coal mining equipment [3].

4 Improved content of automation technology and equipment for fully mechanized coal mining face

4.1 Improvement of equipment and facilities

As mentioned above, through the optimization and improvement of equipment, the actual use of equipment can be greatly increased, the content of automated management is optimized, and the deployment of personnel is optimized. Not only can it greatly improve the speed of personnel operating machines, but also the centralized management of coal mines. The equipment and facilities of the working face are adopted to improve the use of equipment, simplify the work flow, and improve the work efficiency of the personnel.

4.2 Improvement of Intelligent Control

Intelligentization refers to the central control of the fully mechanized mining face, adopting full and comprehensive perception technology, and the comprehensive collection of coal mines through intelligent hydraulic supports, shearers, and scraper conveyors that can learn, make decisions, and execute automatically. Carry out a comprehensive technical upgrade. Not only can the working face be highly automated, but on the basis of improving equipment conditions, the remote monitoring and autonomous control of equipment can be refined to achieve safe and efficient coal mining work [4].

4.3 Improvement of management methods

With the continuous innovation and development of modern science and technology, the automation and intelligent development of coal mining face is an inevitable development trend. The management technology level of coal mines should also be continuously innovated and improved with the improvement of coal mine technology. Advanced coal mine working equipment and mining technology, only with the same advanced management methods, can realize the maximum benefit of coal mining enterprises.

5 concluding remarks

The current comprehensive development direction of coal mines is the development and promotion of mechanical automation applications and artificial intelligence control. Through the application of automation technology and intelligent irrigation in fully mechanized coal mining face, the reliability of construction equipment in fully mechanized mining face is improved, the adaptability of working conditions is strengthened, and the production integration of automation and intelligent technology is implemented to realize the reduction of working face, even It is an unmanned production method.