Coal-water dual-resource mine mining mode without change of hydrogeological conditions of overlying strata

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 mode 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 reverse, and there is a situation of "where there is coal, there is a shortage of water, and where there is water, there is a shortage of coal". However, my country's coal mines are mainly distributed in North China and Northwest China where regional water shortages exist, and 70% of the mining areas lack 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 being threatened by water damage, most coal mines in my country also face the contradiction between drainage-water supply-ecological environment protection in the coal mining area and its surrounding ar...

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Problems solved by technology

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

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