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Grouting anchor cable advanced supporting method

A technology of grouting anchor cables and advance support, which is applied in the installation of bolts, earthwork drilling, wellbore lining, etc., can solve the problems of insufficient support strength of advance support, high labor intensity of workers, and influence on roof strength, etc., to achieve Avoid damage to the roof of the roadway, reduce the labor intensity of workers, and improve the effect of supporting speed

Active Publication Date: 2019-04-26
CHINA UNIV OF MINING & TECH +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above analysis, the present invention aims to provide a method of advance support with grouting anchor cables, which is used to solve the problem of insufficient support strength, slow support speed, and broken roof caused by repeated support in the prior art. And the problem of high labor intensity of workers

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  • Grouting anchor cable advanced supporting method
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Embodiment Construction

[0030] The preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. The accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to explain the principle of the present invention, and are not used to limit the scope of the present invention.

[0031] A specific embodiment of the present invention discloses a method for grouting anchor cable advance support, which includes the following steps:

[0032] Step 1: Determine the roadway 1 to be supported in the current working face 3. To determine the mining roadway 1, based on the geological conditions and engineering production conditions, select the mining roadway 1 that meets the above conditions for advanced support.

[0033] Step two, select a single or multiple mining roadways 1; according to the leading support pressure distribution law of the mining roadways 1 and engineering geological condit...

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Abstract

The invention relates to a grouting anchor cable advanced supporting method, belongs to the field of advanced supporting and aims at solving the problems of insufficient supporting strength and slow supporting speed in the prior art and roof breakage and large worker labor intensity caused by repeated supporting. The advanced supporting method disclosed by the invention comprises the following steps: step 1, determining a mining roadway (1) to be supported on a current working face (3); step 2, determining an advanced supporting distance L according to the advanced supporting pressure distribution law and the engineering geological condition of the mining roadway (1); step 3, adding grouting anchor cable advanced supporting to a roof of the mining roadway (1) to form a roof supporting structure. In a coal mining process, the working face (3) is propelled forwards, the grouting anchor cable advanced supporting is simultaneously and continuously added in the propelling direction, and theadvanced supporting distance is maintained in a safe range. The grouting anchor cable advanced supporting method disclosed by the invention can ensure safe mining and simultaneously improve supporting strength and supporting efficiency and reduce worker labor intensity.

Description

Technical field [0001] The invention relates to the technical field of advanced support, in particular to a method for advanced support of a grouting anchor cable. Background technique [0002] The stability of the surrounding rock of the roadway has an important impact on the safe production of the mine. The instability of the surrounding rock of the roadway causes a large number of casualties and property losses. Therefore, strengthening the control of the surrounding rock of the roadway is of great significance to the safe production of the mine. The advance support of roadway is mainly to prevent the deformation, movement and destruction of the surrounding rock of the roadway due to the superposition of the advance support pressure and the support pressure along the inclined direction. At this stage, comprehensive mechanized equipment is used to mine coal resources. The general pressure generated by this is relatively high. If active and effective support methods cannot be ad...

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Application Information

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IPC IPC(8): E21D20/02E21D20/00E21D21/00E21D11/15E21D11/18
CPCE21D11/152E21D11/18E21D20/003E21D20/02E21D21/0026
Inventor 姚强岭回新冬朱柳任燕飞王思栋王烜辉夏泽杨斌
Owner CHINA UNIV OF MINING & TECH
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