Corner refers to the corner position. The ventilation in this area is poor, the temperature and humidity are high, and the gas released at the intersection of goaf and coal mining face is easy to accumulate, and the gas concentration is high. This is the key point of gas prevention and control in working face.
Coal deposits are layered, widely distributed, with large reserves, brittle coal quality and easy to cut and break, and mining is often accompanied by disasters such as water, fire and gas. Compared with other mineral deposits, coal mining technology has some different characteristics. Mining methods are divided into open-pit mining and underground mining. Mechanized methods are usually adopted; A few use hydraulic coal mining; Underground coal gasification is still in the experimental stage.
Extended data:
Coal mining technology, whether open-pit or underground, is developing towards remote control and automation of production process on the basis of high mechanization. By improving the design, selection, materials, manufacturing technology, inspection methods and maintenance system of fully mechanized mining equipment, its production capacity and equipment utilization rate are improved.
At the same time, mine hoisting, transportation, drainage, ventilation, gas monitoring and other links will realize automation and remote control. Both underground and open-pit coal mines will realize centralized computer automatic management and monitoring. Some countries have used robots in underground mining job interviews. If the technical links such as resource recovery, slime treatment, auxiliary transportation and ventilation system can be further improved and perfected, hydraulic coal mining method will be a promising coal mining technology.
References:
Baidu encyclopedia-Shangjiao