Method for drainage and grouting of stratifugic water

Abstract

The invention discloses a method for drainage and grouting of stratifugicwater, and relates to the technical field of mine safety. The method includes the following steps: firstly, a water inrush source and aquifer locations above a stope are determined; then mechanical parameters of aquifers are analyzed through an overburden strata mechanics mechanism, then hydrogeological analysis of each aquifer in an overlying rock is conducted though a geophysical exploration method, and the maximum aquifer in a stratifugicwater supply source is selected as a target aquifer; and with exploitation of a stoping working face, the stratifugicspace below the target aquifer develops gradually, and underground drilling drainage and surface drilling stratifugicgrouting are conducted on the stratifugicspace to form a recycled water-resisting layer. According to the method for drainage and grouting of the stratifugic water, underground drilling drainage is conducted on the stratifugicwater, surface drilling, grouting and filling are conducted on the stratifugicspace, the fracture of a soft formation is filled with grout again to form a recycled water-resisting layer, and thus damage of the separation layer water to underground roadways can be effectively controlled; and meanwhile, the stratifugicspace is filled with the grout, overburden strata movement can be controlled, and thus surface movementand deformation are lowered.

Description

technical field [0001] The invention relates to the technical field of mine safety, in particular to a grouting method for releasing layer water. Background technique [0002] In recent years, the number of water damage accidents using the coal seam roof aquifer as the main source of water is increasing, causing casualties accounted for about 3.9%, and the frequency of accidents accounted for about 8.8%, among which there is no statistics that did not cause casualties or major economic losses Water damage accident. The causes of roof water damage accidents are not only the water from the roof aquifer (body) entering the mine through mining fissures, structures, and drilling holes, but also the separation layer water damage, as a new type of water damage, has caused heavy losses and casualties to many mines. . [0003] During the mining process, the overburden of the coal seam produces a separation layer, and a part of the water-filled separation layer space is affected by ...

AI Technical Summary

Problems solved by technology

However, in the former method, since the mining area has not yet been exploited, and the delaminated water has not formed, the drainage efficiency is low and the roadway is occupied.

The latter method requires too much investment, requires high drainage technology, and lasts for a long time, which cannot fundamentally solve the potential crisis of the separation layer water flushing the goaf

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