Coal mine underground mining, dress and filling integral method

Abstract

The invention discloses a coal mine underground mining, dress and filling integral method, which comprises the following steps that: a raw coal belt conveyor, a raw coal cabin, a raw coal feeding belt conveyor, a washing system, a cleaned coal belt conveyor, an underground coal storage cabin, a washed coal gangue belt conveyor, a digging coal gangue belt conveyor, a crushing machine, a coal gangue feeding belt conveyor, a coal gangue cabin and a filling coal belt conveyor are adopted; underground mined raw coal is subjected to dressing by washing by the washing system; cleaned coal subjected to dressing by washing is conveyed into the underground coal storage cabin and is hoisted onto the ground; and washed coal gangue obtained after the dressing by washing is crushed by the crushing machine and is then conveyed to a solid filling coal mining work surface for mine goaf filling. The mining, dress and filling integral method has the advantages that the safe and efficient exploitation under a railway, a water body and a building is realized; the mine auxiliary hosting pressure is reduced; the coal quality is improved; and the problems of ground occupation, pollution and the like caused by coal gangue discharge onto the ground are solved.

Description

technical field [0001] The invention relates to an integrated method of mining, selection and filling in underground coal mines, and is especially suitable for coal mines where the excavation working face has a large amount of gangue output or the coal mining working face has a high gangue content rate, and the underground working face needs to be filled. Background technique [0002] In recent years, with the continuous expansion of coal mining, the environmental damage caused by coal mining, including gangue discharge and surface subsidence, has become increasingly serious. According to incomplete statistics, there are more than 1,600 large-scale gangue dumps piled up in my country over the years, about 5.5 billion tons, and the annual increase is 200-300 million tons. This not only takes up a lot of land, but also affects water bodies, The soil and the atmosphere have caused serious pollution; on the other hand, many coal mines in my country have a large number of "three-d...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of energy consumption, land occupation, and environmental pollution in existing mines when raw coal is lifted to the ground for sorting, and to provide a simple and green system that can directly realize the separation of coal and gangue and the direct filling of gangue in underground mines. Coal mine mining, selection and filling integration technology

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