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Method for quickly retracing comprehensive mechanized coal mining face in long-distance service roadway multi-channel manner

A fully-mechanized mining face and multi-channel technology, applied in tunnels, mining devices, mining equipment, etc., can solve problems affecting the safety of fully-mechanized mining face, rapid relocation, impact, deformation, etc., to reduce roadway support costs , Improve the effect of stress environment and more safe channels

Active Publication Date: 2016-11-09
UNIV OF SCI & TECH BEIJING
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above two methods of rapid withdrawal of fully mechanized mining face have been widely applied in shallow mines and achieved good results. Significant changes occurred in the shallower part, resulting in roof fall, deformation and impact gradually appearing when the retraction channel and the working face were connected, which seriously affected the safety and rapid relocation of the fully mechanized mining face.

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  • Method for quickly retracing comprehensive mechanized coal mining face in long-distance service roadway multi-channel manner
  • Method for quickly retracing comprehensive mechanized coal mining face in long-distance service roadway multi-channel manner
  • Method for quickly retracing comprehensive mechanized coal mining face in long-distance service roadway multi-channel manner

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Embodiment Construction

[0028] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0029] The invention provides a method for quickly retracting a fully mechanized mining face with multiple channels in long-distance auxiliary roads.

[0030] Such as figure 1 , figure 2 and image 3 Shown is a schematic diagram of the method during implementation, and the specific implementation steps are as follows:

[0031] (1) Before the stop-mining line 3 is 300m ahead of the working face 6, at a distance of 60-80m from the stop-mining line 3, a transport roadway 1 that is basically parallel to the stop-mining line 3 is excavated along the coal wall; the clear width of the roadway is 4.5 ~5.0m, net height 3.6~3.8m, the bottom plate is solidified with concrete, supported by anchor net cables, the support parameters are as follows:

[0032] Net: ...

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Abstract

The invention provides a method for quickly retracing a comprehensive mechanized coal mining face in a long-distance service roadway multi-channel manner, and belongs to the technical field of mining. The method mainly comprises the following steps of digging, along a coal wall, a haulage roadway on the outer side of a mining stopping line before the mining stopping line exceeds a working face; digging out connection roadways between the haulage roadway and the mining stopping line, and constructing large-diameter pressure relief holes in the connection roadways and the haulage roadway; arranging stress monitoring stations at the connection roadways and the haulage roadway; when the working face approaches the mining stopping line, if a burst danger is discovered, carrying out pressure relief treatment in time; carrying out tailing-in work when the back production of the working face is carried out until the position of the mining stopping line. By using the method, rock burst dangers generated by a service roadway are reduced; the multi-face parallel operation is realized through the connection roadways; the retracing speed is improved. The safe and quick moving and face inversing of a deep-seated strong-burst comprehensive mechanized coal mining face are basically guaranteed.

Description

technical field [0001] The invention relates to the technical field of mining, in particular to a method for quickly retracting a fully-mechanized mining face with multiple channels in long-distance auxiliary lanes. Background technique [0002] The relocation of the fully mechanized mining face is an important production preparation work of the fully mechanized mining production mine. It is not only an important link to realize safe production in the mine, but also directly restricts the improvement of the unit yield level of the fully mechanized mining face. With the improvement of the degree of mechanization of coal mines, the application of high-power and large-tonnage mechanical equipment, the work of moving and reversing seriously restricts the improvement of the unit yield level of fully-mechanized mining face. At present, there are mainly the following two rapid withdrawal methods: (1) CN1482344A discloses a multi-channel moving method for auxiliary lanes in fully me...

Claims

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Application Information

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IPC IPC(8): E21D9/14E21F17/18E21F13/06
CPCE21D9/14E21F13/06E21F17/18
Inventor 姜福兴舒凑先朱斯陶李东
Owner UNIV OF SCI & TECH BEIJING
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