Fully mechanized coal gangue synchronous filling system and method based on the reduction of coal mining subsidence degree

Abstract

The invention belongs to the technical field of green mining environmental protection of underground coal resources and discloses a fully mechanized coal gangue synchronous filling system and method based on the reduction of a coal mining subsidence degree. Through the difference of the specific gravities of coal and coal gangue, through the dry jumping platform sorting machine sorting technology,the coal and the coal gangue are separated, and the coal gangue enters into a coal gangue automatic transport conveyor belt. Through a linkage scraper behind the self-moving fully mechanized mining hydraulic support of long wall mining method fully mechanized coal mining, the goaf where an overlying rock is not fallen yet formed by the fully mechanized mining behind the hydraulic support is filled with the coal gangue, and the technical method of mining coal and filling the goaf of the self-moving fully mechanized mining hydraulic support is filled with the coal gangue at the same time is formed. According to the system and the method, the overlying rock falling amount in the goaf is reduced, the damage degree of underground coal mining surface collapse is directly and indirectly reduced,and the sustainable development goal of the green development of coal resource development and mine ecological environment protection is achieved.

Description

technical field [0001] The invention belongs to the technical field of underground coal mining environmental protection, and in particular relates to a fully mechanized mining coal gangue synchronous filling system and method based on reducing the degree of coal mining subsidence. In particular, it relates to a synchronous filling system and method for coal gangue in fully mechanized mining based on reducing the degree of coal mining subsidence and reducing environmental pollution caused by coal gangue occupation. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: [0003] After coal resources are mined underground, (1) a certain goaf space will be formed underground, and the top rock cannot support the pressure of the overlying rock, which will lead to caving, cracks and subsidence deformation of the overlying rock, which will appear as a subsidence basin on the ground , ground fissures, subsidence troughs, dam...

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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