A mine mining method with dual resources of coal and water without changing the hydrogeological conditions of the overlying rock

Abstract

The invention provides a coal-water dual-resource mine mining mode without change of hydrogeological conditions of overlying strata. The coal-water dual-resource mine mining mode comprises steps as follows: mining areas are divided according to developing height of a water flowing fracture zone, water mining grade and degree of allowable mining failure of water; a mining mode is determined according to the divided mining areas; direct mining is performed in a minable area; under the condition that an area which is not suitable for being mined does not meet the security requirement, short-wallmechanization mining is adopted, and the security requirement means that the water inflow of a working face does not affect normal production; if the short-wall mechanization mining is selected, depthof a coal seam is replaced with pressure arch height for calculation in security coefficient calculation, and mining width and retaining width of the short-wall mechanization mining are determined according to the security coefficient; the coal-water dual-resource mine mining without change of the hydrogeological conditions of the overlying strata is performed according to the mining mode; the mining mode replaces a long-wall large-mining-height mining mode, so that damage to the environment in a coal mining process is greatly reduced, and the mode is conducive to harmony between man and nature.

Description

Technical field [0001] The invention relates to the field of mine mining, in particular to a coal-water dual-resource mine mining method that does not change the hydrogeological conditions of the overlying rock. Background technique [0002] my country’s water resources and coal resources are distributed in the reverse direction. There is a situation of “where there is coal shortage of water and where there is water.” my country’s coal mines are mainly distributed in the regions of North China and Northwest China where there is a shortage of water. 70% of the mining areas are short of water. Water, 40% of mining areas are seriously short of water, and the development of the coal industry is severely restricted by water resources. Therefore, in addition to the threat of water hazards, most coal mines in our country are also facing the contradiction between drainage, water supply and environmental protection in coal mine areas and surrounding areas. [0003] The modern coal mining te...

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Problems solved by technology

[0004] In view of this, the purpose of the present invention is to propose a coal-water dual-resource mine mining method that does not change the hydrogeological conditions of the overlying rock, which is used to replace the traditional mining method that only adopts long walls and large mining heights to solve the problems in the current coal mining technology. Environmental Pollution Problems

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