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

A roof detachment and working face technology, applied in drainage, earthwork drilling, safety devices, etc., can solve the problems of large engineering volume and capital investment, difficulty in controlling the diversion of detachment water body, and inability to realize targeted and precise exploration and discharge. , to achieve the effect of saving the amount of engineering

Active Publication Date: 2019-01-29
XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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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,

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

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Embodiment Construction

[0040] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0041] According to the mining conditions of the working face, the structure of the overlying rock, the hydrogeological conditions of the water-resisting layer, etc., the present invention adopts measures such as dredging and lowering the water level of the aquifer, grouting to strengthen the water-resisting layer, and exploring and releasing the separated water body to carry out comprehensive prevention and control:

[0042] First of all, long-distance directional drilling is used to drain and depressurize the water-filled aquifer in the abscission space. On the one hand, it can reduce the threat of roof water damage to the working face. Drainage efficiency; secondly, if the drainage and depressurization of the water-filled aquifer fails to achieve the expected purpose, downhole drilling can be used to grout the formed separation layer space,...

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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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Application Information

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IPC IPC(8): E21F16/00
CPCE21F16/00
Inventor 赵宝峰刘其声黄选明姬亚东王皓孙洁曹海东李德彬
Owner XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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