A method of man-made water-resisting formation using strip and solid filling coal mining technology

Abstract

The invention discloses a method for artificially making a waterproof stratum by using a strip and solid filling coal mining technology. The method comprises steps of crossingly arranging a strip fully-mechanized coal mining and strip and solid filling coal mining face in various coal pillars and the surrounding areas of the coal pillars in the mining area, and controlling mining overburden rock to be in a state of insufficient subsidence to enable a strip fully-mechanized mining goaf to have a stable cavity for underground water storage; using mining fissure seepage channels and artificiallyconstructed catchment channels to gather underground water to the goaf; and using natural and non-polluting solids in the mining area as a filling material to meet the environmental protection requirements of the underground water storage layer. The method of the invention not only recovers various coal pillar resources, but also effectively solves the problem of storage, protection and utilization of water resources in the water-deficient mining area, and can also reasonably treat the solid waste in the mining area; and the method has advantages of simple technical process, convenient implementation, good economic and social benefits, and broad application prospects.

Description

technical field [0001] The invention relates to a method for filling an artificial water-resisting formation of coal mining technology with strips and solids, which is especially suitable for mining areas of water-deficient coal mines and belongs to the technical field of coal mining. Background technique [0002] Among the 14 large-scale coal bases in my country, except for Yunnan-Guizhou, Lianghuai, and Eastern Mengdong bases, 11 bases are seriously short of water, especially in the northwest region, which accounts for 75% of the country's coal resources, but only about 20% of water resources, and most of the precipitation is along the Surface runoff is lost quickly, and a small part of surface water evaporates quickly. Most modern mining areas adopt longwall caving mining, and the goaf is quickly compacted by the caving overlying rock, while most of the coal seam overlying rock in the water-deficient mining area has no effective aquifer, and cannot form a water storage spa...

AI Technical Summary

Problems solved by technology

Most modern mining areas adopt longwall caving mining, and the goaf is quickly compacted by the caving overlying rock, while most of the coal seam overlying rock in the water-deficient mining area has no effective aquifer, and cannot form a water storage space. The precipitation loss is more serious, and the problem of water shortage in the mining area will be more prominent; at the same time, in order to protect the ground buildings and traffic roads in the coal mine area from the impact of underground mining work, a large number of protective coal pillars will be left in these areas during the mining process, so that A large amount of coal resources cannot be recovered

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