Heap storage method for preventing spontaneous combustion of coal gangue hill

Abstract

The invention relates to a coal gangue hill control technology, in particular to a heap storage method for preventing spontaneous combustion of a coal gangue hill, thereby solving the problems that the existing heap storage way is easy to cause the spontaneous combustion of the free surface and the edge of a hill body, and once one place occurs the spontaneous combustion, a plurality of places areburnt. The heap storage method comprises the steps of carrying out transverse layered soil coverage grinding treatment in each layer of the coal gangue hill body; setting a soil isolation chamber atthe free place of a slope at the middle and lower part of the coal gangue hill body and the plane place of a top layer along the longitudinal direction; and adopting three layers of soil coverage layers of a grinding loess layer, a loosening loess layer and a fine particle gangue layer at the outmost layer of the coal gangue hill body. The heap storage method can not only effectively prevent the spontaneous combustion of coal gangue, but also prevent water and soil loss caused by rainwater brushing and dust flying with wind and provide a beneficial growth environment for plants; furthermore, the heap storage method adopts the transverse layered soil coverage grinding treatment way and sets the soil isolation chamber at the free place of the slope at the middle and lower part of the hill body and the plane place at the top, thereby being capable of controlling the spontaneous combustion of the coal gangue caused by manual disturbance or other factors in the local region and not causingthe impacts on the whole hill body.

Description

technical field [0001] The invention relates to a treatment technology for coal gangue hills, in particular to a storage method for preventing spontaneous combustion of coal gangue hills. Background technique [0002] As we all know, coal gangue hills have become the area with the harshest site conditions, the largest stacking volume, and the most difficult management in coal mining areas. Coal gangue accounts for about 20% of the mining volume on average. At present, the comprehensive utilization rate of coal gangue in my country is about 30%-40%. According to statistics, there are more than 5,000 coal gangue dumps in the country, and about 1 / 3 of them spontaneously combust to varying degrees. Spontaneous combustion of coal gangue, ashing of organic matter, dissociation and volatilization of sulfur make the stability of coal gangue poor, and it is easy to form geological disasters such as collapse, landslide and mud-rock flow when it is eroded by artificial excavation, exp...

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Problems solved by technology

[0004] In order to solve the problem that the existing coal gangue pile storage method is prone to spontaneous combustion on the empty surface and the edge of the mountain body, and sp

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