Synchronous filling system and method for fully mechanized coal gangue based on reducing the degree of coal mining subsidence

Abstract

The invention belongs to the technical field of environmental protection for green mining of underground coal resources, and discloses a fully-mechanized coal gangue synchronous filling system and method based on reducing the degree of coal mining subsidence. Through the difference in the proportion of coal and coal gangue, the dry method jumping platform sorter Sorting technology separates coal from gangue, and gangue enters the gangue automatic transport conveyor belt; through the linkage scraper behind the self-moving fully mechanized mining hydraulic support of the longwall coal mining method, the coal gangue is filled behind the hydraulic support In the goaf where the overlying rock formed by fully mechanized mining has not yet collapsed, a technical method is formed to synchronously fill the produced coal gangue into the goaf of the self-moving fully mechanized mining hydraulic support while mining coal. The invention reduces the caving amount of the overlying rocks in the goaf, directly or indirectly reduces the damage degree of underground coal mining surface subsidence, and realizes the sustainable development goal of green development of coal resource development and mine ecological environment protection.

Description

technical field [0001] The invention belongs to the technical field of underground coal mining environmental protection, and in particular relates to a synchronous filling system and method for fully mechanized coal gangue based on reducing the degree of coal mining collapse. In particular, it relates to a synchronous filling system and method for fully mechanized coal gangue based on reducing the degree of coal mining collapse and reducing the land occupation and pollution of coal gangue. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: [0003] After underground mining of coal resources, (1) a certain goaf space will be formed underground, and the top rock cannot support the pressure of the overlying rock, which will cause the overlying rock to fall, crack and sink and deform, and it will appear as a collapsed basin on the ground. , ground fissures, subsidence grooves, destroying cultivated land, leading to ...

AI Technical Summary

Problems solved by technology

[0011] (2) Lag of coal gangue filling time (time out of sync)

[0012] (3) High filling cost

The cost of crushing and transporting the coal gangue that has been released into the well is significantly higher than that of in-situ filling in the well

[0013] (4) Coal gangue occupies land and pollutes the environment

When coal gangue comes out of the well, it will accumulate on the ground, occupy land, spontaneously ignite and pollute the environment, increasing land acquisition and reclamation costs, etc.

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