A kind of advance support method of grouting anchor cable

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 advance support, in particular to a method for advance support of grouting anchor cables. Background technique [0002] The stability of roadway surrounding rock has an important impact on mine safety production. The instability of roadway surrounding rock causes a large number of casualties and property losses. Therefore, strengthening the control of roadway surrounding rock is of great significance to mine safety production. The advance support of the roadway is mainly to prevent deformation, movement and destruction of the surrounding rock of the roadway due to the superposition of the advance bearing pressure and the bearing pressure along the inclined direction on the working face. At this stage, comprehensive mechanized equipment is used to mine coal resources, which generally creates a great pressure. If active and effective support methods cannot be adopted, it will have a certain impact on the mi...

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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