The following are specific introductions: ① Leaching mining technology. This is one of the mining technologies widely used in the mining industry at present, and the effect is good. When applying this technology, it is necessary to fully consider the chemical and physical characteristics of minerals. On this basis, the leaching solution is injected into the mineral layer to be mined, and some components in the ore are immersed in the leaching solution through chemical reaction, and then the really useful components are extracted from the leaching solution. ② Filling mining technology. Filling mining technology mainly refers to the complete filling of mined-out areas with filling materials during mining operations. In case of special circumstances, in order to ensure the stability of goaf, the combination of filling and support can be used to fill. The main purpose of filling goaf is to avoid surface subsidence caused by surrounding rock caving, thus providing a safe and orderly working environment for the whole mining operation process.
③ Open stope mining technology. Open stope mining technology refers to dividing ore blocks into pillars and rooms, and then mining them separately. The operator should finish the mining of the room first, and then carry out the mining of the pillar, and the pillar should be mined in the open air. ④ Rock mass reinforcement technology. In the process of practical application of rock mass reinforcement technology, it is necessary to reinforce a large range of rock mass with the help of anchor cables. Bolt support can usually reinforce the range of 2m~3m below the surface, and anchor cable can reinforce the range of 10m~20m below the rock mass. Practice has proved that the adoption of rock mass reinforcement technology can further enhance the stability of unstable surrounding rock of chute and roof. ⑤ Top coal caving mining technology. This technology mainly uses the method of blasting to make the surrounding rock sink, thus controlling the ground pressure. With the further expansion of the mining face, miners should collapse the surrounding rock in a planned way, and choose appropriate filling materials to backfill the goaf to control the ground pressure.