Grouting treatment method for top-caving area of driving face of coal mine

A technology for excavating working face and processing method, which is applied to mining equipment, earth-moving drilling, filling and other directions, can solve the problems of unsafe, fast and proper handling of the roof collapse accident of coal mine excavation working face, and achieves good reinforcement effect, The effect of low cost and low material consumption

Inactive Publication Date: 2016-11-16
HENAN POLYTECHNIC UNIV
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AI Technical Summary

Problems solved by technology

[0003] Based on the problem in the prior art that the roof fall accident of the coal mine excavation face cannot be handled safely

Method used

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  • Grouting treatment method for top-caving area of driving face of coal mine
  • Grouting treatment method for top-caving area of driving face of coal mine

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[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0027] A grouting treatment method for the high-risk area of ​​a coal mine excavation face,

[0028] 1. The process of building the wall is carried out according to the following steps:

[0029] a. Clean up the gangue on the edge of the roof fall area (5);

[0030] b. Build a blocking wall (1) with a width greater than 20cm close to the edge of the roof fall area. The blocking wall must cover the entire roadway section to prevent grout leakage in the subseque...

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Abstract

Coal mine excavation face often causes roof fall accidents due to changes in geological conditions, inadequate support measures, and poor management. For large-scale roof fall accidents, they often cannot be handled well. The usual method is to clear out the working passage in the roof-fall area, and the personnel go deep into the top of the roof-fall area to install anchor rods and anchor cables and erect wooden pile roofs. This approach requires a large amount of labor, difficult construction, poor safety, a large amount of gangue cleaning, and the hidden danger of gas accumulation in the roof fall area. Therefore, the present invention proposes a grouting treatment method for the high risk area of ​​the excavation face. The method includes three technological processes of constructing a blocking wall, subarea grouting, and shed clearing. This method does not require workers to go deep into the roof fall area to operate, the amount of gangue cleaning is small, the cavity of the fall is eliminated, and the risk of gas accumulation is eliminated. It has a good reinforcement effect on gangue in the roof fall area, and the slurry spreads more evenly. Low material consumption and low cost.

Description

technical field [0001] The invention relates to the technical field of controlling high-risk areas in coal mines, in particular to a grouting treatment method for high-risk areas in coal mine excavation working faces, and also has certain applicability to the treatment of high-risk areas in roadways. Background technique [0002] Coal mine excavation working faces often cause roof fall accidents due to changes in geological conditions, inadequate support measures, and poor management; the height of the roof fall ranges from tens of centimeters to tens of meters; Strengthen support and other measures to deal with it. However, for large-scale roof fall accidents, it is often not properly handled; the usual method is to clear the working channel in the roof fall area (5), and personnel go deep into the top of the roof fall area to install anchor rods and anchor cables. And set up the roof of the wooden pile structure; this method has a large amount of labor, difficult construct...

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Application Information

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IPC IPC(8): E21F15/04
CPCE21F15/04
Inventor 刘旭锋熊祖强王成王雨利袁印熊志朋王凯丁子文姜涛孙亚鹏
Owner HENAN POLYTECHNIC UNIV
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