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A Supporting Method for Anti-Caution Roof Side

A technology of side and roof, which is applied in earthwork drilling, temporary shields, mining equipment, etc., can solve problems such as roof fall accidents, uncertainty of sides, and influence on conventional mining of working faces, so as to prevent roof fall and reduce sides volume effect

Active Publication Date: 2016-04-20
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the continuous increase of coal mining intensity, especially the rapid development of high-yield and high-efficiency technologies in recent years, most coal seams with good mining conditions have been nearly exhausted within a short service life. At this time, some coal seams with poor occurrence conditions and roof conditions Coal seams that are prone to roof collapse, such as "three soft" coal seams, "two soft and one hard" coal seams, etc., have been exploited. Due to the complex working face conditions of such coal seams, the roof is weak and broken, and the coal quality is soft. During the mining process of the face, due to the influence of factors such as the mining of the working face and the repeated support of the hydraulic support, the stability of the surrounding rock of the working face is poor, the roof is broken, the roof of the roof is serious, and the position of the roof of the roof is uncertain and irregular. It seriously affects the routine mining of the working face and causes serious safety hazards
Nowadays, there is no effective way to deal with the roof fall of the sheet side. Most of them are supported by a single hydraulic support to prevent the occurrence of the roof fall. When the roof of the working surface is encountered, the passive auxiliary support measures are adopted, and the effect is not good. Good, and prone to roof fall accidents

Method used

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  • A Supporting Method for Anti-Caution Roof Side

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Embodiment Construction

[0012] The following is a further description of an embodiment of the present invention:

[0013] The present invention is a method for supporting the anti-collapse roof panel. First, when the cut hole is opened in the working face, the cut cut section roof of the entire working face is pre-laid and connected with a metal net with a fixed specification of 5.0m×1.0m. The net material is 10# iron wire, the mesh is diamond-shaped braided holes, the mesh is 0.04m×0.04m, and then the hydraulic support is installed in the cut hole, and the hydraulic support top beam is against the direct roof to ensure that the length of the connected metal mesh can hang in front of the support coal wall. And use the hydraulic support protection board against the coal wall; when laying the net, first unfold the net along the working surface, and then connect with the front net of the hydraulic support in turn. The overlap of the metal net shall not be less than 200mm, and the double strand 16# iron wire...

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Abstract

Provided is a supporting method capable of preventing roof and wall falling accidents. By means of the supporting method, joist steel, metal nets and a hydraulic support are adopted for supporting a broken roof plate of a working surface in an auxiliary mode. When an opening is cut in the working surface, metal nets with certain specifications are overlaid on a section of a cut opening on the whole working surface are fixedly connected onto the section of the cut opening, and certain pitches among the metal nets are connected through iron wires. Afterwards, the hydraulic support is installed in the cut opening, a top beam of the hydraulic support butts against a direct top, so that the connected metal nets can droop in front of the hydraulic support and butts against a coal mine wall through a face guard plate. The joist steel is horizontally bundled on the metal nets before the hydraulic support through iron wires. In coal mining, the face guard plate is drawn back, and the metal nets in front of the hydraulic support are bundled on a column through iron wires. When coal mining is not performed, the metal nets are put down, the face guard plate butts against the coal mine wall, the support moves frontward, the metal nets are connected with the joist steel and moves to cover on the roof plate relative to the support, then work for connecting the metal wires and bundling the joist steel can be performed uninterruptedly and repeatedly until actual mining on the working surface is finished.

Description

Technical field [0001] The invention relates to a supporting method for an anti-collapse roof slab, which is particularly suitable for roof support when the working face is prone to roof falling and slabs for mining. Background technique [0002] With the continuous increase of coal mining intensity, especially the rapid development of high-yield and high-efficiency technologies in recent years, most coal seams with good mining conditions have been nearly exhausted within a short service life. At this time, some of the occurrence conditions are poor and roof conditions are The coal seams that are poor and prone to caving the roof, such as "three soft" coal seams, "two soft and one hard" coal seams, etc., have been exploited. Due to the complex working face conditions of this type of coal seam, the roof is weak and broken, and the coal is soft. In the process of face mining, due to factors such as mining face and repeated support of hydraulic supports, the stability of the surroun...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D19/00
Inventor 杨科陆伟闫书缘王猛陶睿许鸣皋窦礼同孙力
Owner ANHUI UNIV OF SCI & TECH
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