New solid filling coal mining technology

With the advance of urbanization and accelerate the pace of coal mining, mine faced with a growing number of "three times" (under the iron road, at the village, under water) pressure coal and resource depletion, now widely used in Article With mining, relocation villages, filling mining and other technologies, strip mining recovery rate is low, the cost of relocation villages is high, making solid filling coal mining technology the best way to liberate "three down" coal.

Solid-filled coal mining controls the deformation of the surface by filling solid fillings on the long-arm fully mechanized mining face, and rationally transporting the solid filling to the filling work on the basis of ensuring the support of the coal mining face and the roof to be filled. Face and fully compact it. The filling of the hydraulic support and the filling conveyor is the core equipment in the whole solid filling and coal mining integration project.

Solid-filled coal mining technology can not only use solid waste such as vermiculite and fly ash as the support for underground filling structure. On the basis of solving the problem of land subsidence and collapse, it can also achieve the maximum recovery of “three down” coal compression. The maximum possible increase in the service life of the mine. While realizing economic benefits, the technology also solves the problem of pollution caused by meteorites on the ground and reduces a series of ecological damage caused by coal mining.

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