Gob sealing structure

A closed structure and goaf technology, applied in mining equipment, mining equipment, earthwork drilling, etc., can solve problems such as high gas density, potential safety hazards, gas gushing, etc., to increase the sealing distance, ensure the sealing quality, improve The effect of the closure effect

Inactive Publication Date: 2012-11-28
HUAINAN MINING IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The gas density on the side of the double-layer tile and stone wall is still very high, and the gas is still easy to gushes out from the cracks on the wall, which poses a great safety hazard

Method used

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Experimental program
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Embodiment Construction

[0021] Such as figure 1 and 2 As shown, the structural schematic diagram of Embodiment 1 of the goaf sealing structure provided by the present invention. As shown in the figure, the goaf closure structure described in the first embodiment includes: a first wall 2 and a second wall 3 arranged in the goaf roadway 1 . The distance D2 between the first wall 2 and the second wall 3 is not less than 2 meters, and the thickness D1 of the first wall 2 and the second wall 3 is not less than 0.6 meters. Such as figure 2 As shown, the inner wall of the goaf roadway 1 is provided with a roadway shotcrete layer 4 formed by at least two spraying processes, and the total thickness of the roadway shotcrete layer 4 is not less than 0.1 meters. Such as figure 1 As shown, the inner wall of the goaf roadway is provided with a first ring wall groove 11, the edge of the first wall 2 is embedded in the first ring wall groove 11, and the first wall 2 The thickness is adapted to the groove width...

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Abstract

The invention provides a gob sealing structure. The gob sealing structure comprises a first wall and a second wall which are arranged in a gob roadway; the space between the first wall and the second wall is not less than 2m, and the thicknesses of the first wall and the second wall are both not less than 0.6m; the inner wall of the gob roadway is provided with a roadway guniting layer formed through at least two guniting processes, and the total thickness of the roadway guniting layer is not less than 0.1m; the inner wall of the gob roadway is provided with a first annular-wall groove, the edge of the first wall is embedded into the first annular-wall groove, and the thickness of the first wall is adapted to the width of the first annular-wall groove; the inner wall of the gob roadway is provided with a second annular-wall groove, the edge of the second wall is embedded into the second annular-wall groove, and the thickness of the second wall is adapted to the width of the second annular-wall groove; and a grouting layer formed through a cement mortar grouting process is arranged between the first wall and the second wall. The gob sealing structure has higher sealing performance.

Description

technical field [0001] The invention relates to a mine goaf sealing technology, in particular to a goaf sealing structure. Background technique [0002] The sealing technology of the goaf in the mine is directly related to the safety of the mine. If the goaf is not managed properly, it is very easy to cause a gas explosion and the serious consequences of staff being hypoxic and suffocating. [0003] The existing gob closed structure adopts single-layer double-layer tile and stone masonry. If the tight sealing effect cannot be achieved, the scope of sealing is expanded, that is, another double-layer tile and stone wall is built in the roadway. A double-layer tile and stone wall has a thickness of 0.6m. Due to the short closing distance between the double-layer tile-stone wall and the gob roadway, that is, the short contact distance, and the top of the goaf roadway is prone to deformation, the double-layer tile-stone wall is prone to cracks due to extrusion. The gas gas in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F17/12
Inventor 褚成军桑森栾志国
Owner HUAINAN MINING IND GRP
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