Advanced prevention and control method for working face roof separation water disasters

Abstract

The invention belongs to the technical field of mine safety, and relates to an advanced prevention and control method for separation water disasters, in particular to an advanced prevention and control method for coal mine working face roof separation water disasters. According to the advanced prevention and control method for the working face roof separation water disasters, by combining the features of working face mining conditions, cover rock structures and water-resisting-layer-containing hydrogeological conditions, underground drilled holes are used for carrying out water level dredge-lowering on a filled water bearing strata in a separation space; grouting is carried out on the separation space for water flooding, and meanwhile the purpose of thickening an underlying water resistinglayer of the separation space is achieved; the technical scheme of bundled drilling and target drawing-off is adopted for formed separation water bodies, and thus in the working face stoping process,formation of the separation water bodies is avoided, the scale of the separation water bodies is reduced or centralized drawing-off is carried out on large-scale separation water bodies, so that separation water disaster accidents are avoided.

Description

technical field [0001] The invention relates to a method for advanced prevention and control of delamination water damage, which belongs to the technical field of mine safety, and in particular to an advanced prevention method applicable to roof detachment water damage of coal mine working faces. Background technique [0002] As one of the five major mine disasters, mine water damage seriously affects and threatens the normal production of coal mines and the safety of personnel and property. With the large-scale popularization of mechanized mining of coal resources, the level of mine mining continues to extend to the deep and the scope of mining gradually expands. The geological and hydrogeological conditions faced are also increasingly complex. [0003] During the mining process of the working face, due to the differences in the lithology and physical and mechanical properties of the overlying strata, a separation space will be formed between different rock formations. When...

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Problems solved by technology

Part of the working face threatened by the separation layer water damage is relatively large, and the separation layer water damage control from the ground has problems such as large engineering and capital investment and difficult control of the separation layer water body diversion volume; the use of separation layer water body diversion holes in the mine can avoid ground damage. The disadvantages of drilling, but the current diversion holes are basically arranged in a fan shape, and it is impossible to achieve targeted and precise exploration without determining the position of the detached water body; the measures to control the mining height to avoid affecting the detached water body will inevitably cause coal resources. waste, and the advancing speed of the working face is influenced and determined by many factors, and there are great limitations in the field application of controlling the advancing speed for the control of abscission layer water damage

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