In view of the large deformation of surrounding rock in the material roadway 33(4)19 affected by mining,combined with the mining pressure development law of roadway,the combined support method of anchor mesh cable+U-shaped steel shed+grouting reinforcement was proposed.The supporting strength of surrounding rock was improved by optimizing the supporting parameters of anchor mesh cable and U-shaped steel shed,and determining the grouting time,grouting materials and grouting parameters.By using the cross distribution method to monitor the deformation of surrounding rock,it can be seen that the maximum deformation of roof and floor and the proximity of two sides were reduced by about 53%and 73%respectively after optimization,and the supporting effect was good,which can meet the requirements of secondary reuse.
维普
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