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Construction method of water pre-draining on roof of mining face

A technology for mining working face and construction method, which is applied in the directions of drainage, mining equipment, earthwork drilling, etc., to achieve the effect of reducing water inflow, saving engineering investment, and eliminating impact.

Active Publication Date: 2017-02-01
SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD
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Problems solved by technology

[0003] In order to solve the technical problem of the treatment of the aquifer on the coal seam of the mining face, the present invention provides a construction method for pre-drainage of water on the roof of the mining face

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  • Construction method of water pre-draining on roof of mining face
  • Construction method of water pre-draining on roof of mining face
  • Construction method of water pre-draining on roof of mining face

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Embodiment Construction

[0010] According to the comprehensive analysis of the hydrogeological conditions of the Changping Mine of our group company, the No. 3 coal seam to be exploited has a relatively high water content in the sandstone aquifers numbered K8 and K10. When the old top of the working face collapses after initial mining, the water output is large and sudden, which easily poses a serious threat to the normal production of the working face and at the same time creates a big impact on the drainage system of the working face.

[0011] However, the water-rich anomalous areas delineated in the ground electrical exploration data are relatively rich in water. If they are not released in advance, the water inflow in some areas may suddenly increase during mining, especially when mining from downhill to uphill terrain, the harm is even greater.

[0012] The No. 3 coal recovery working face was initially mined and the old top span was behind, and the outflow water was off-white. After analysis, th...

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Abstract

The invention relates to coal mine underwater treatment technology, in particular to a stope face roof water pre-drainage construction method, which solves the technical problem of treatment of a water-bearing bed on a coal seam of a stope face. As the process of stoping on the stope face includes down stoping firstly and up stoping secondly, stope face roof water is drained in advance through roadways beside the stope face before stoping, a drill site chamber and a water bin are constructed at the lowest position of each of the roadways, two drainage pipelines are paved on each of the roadways, an independent drainage system is utilized, drainage holes are drilled in the drill site chamber towards the stope face roof, and water for drilling is led into the water bin through hoses directly and is drained by the drainage system of the roadways. Since roof water is drained in advance, water inflow during the stoping process is reduced effectively, troubles to production of coal mines due to the roof water are eliminated, affection of flood disaster to production is avoided, a safe and comfortable working environment is provided for the stoping operation, and conditions for stability and high yield of the stope face are created.

Description

technical field [0001] The invention relates to a coal mine underground water control technology, in particular to a construction method for pre-draining roof water of a mining working face. Background technique [0002] In the process of coal mining, aquifers are often encountered on the coal seam of the mining face in some areas. During the mining process of the large working face, the old roof span is backward, and the water inflow will reach the maximum, and the sudden onset will cause a serious threat to the normal production of the working face. , to form a big impact on the drainage system of the working face, especially when going down the mountain for mining, the gushing water is easy to follow the working face, the damage is more serious, and the production is restricted. In addition, under this geological condition, the old top span of the mining face is backward, and the water color is off-white. After analysis, there is a layer of aluminous mudstone in the lowe...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F16/00
Inventor 赵方亮张育恒刘红军薛晓星何健王家学崔宇翔
Owner SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD
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