In response to the problems of large deformation of surrounding rock and high difficulty in support caused by mining in the adjacent 51301 working face of the mining area track roadway,combined with the on-site situation,a comprehensive approach of top cutting pressure relief and constant resistance anchor cable reinforcement is proposed to control the deformation of surrounding rock in the mining area track roadway.Specifically,top cutting and pressure relief boreholes are arranged in the 51301 transportation roadway adjacent to the mining area track roadway,and the stress transmission path between the mining face roof and the mining area track roadway roof is cut off through deep hole blasting.Constant resistance anchor cables are used to reinforce and reinforce the roof and two sides of the mining area track roadway,and are coordinated with the original support system to effectively control the deformation of the surrounding rock affected by dynamic pressure.After on-site application,the problem of large deformation of the surrounding rock in the track roadway was well solved,and the convergence of the roadway section was small,indicating that the surrounding rock support technology used on site has achieved good application results.
关键词
深部开采/动压影响/巷道支护/围岩控制/切顶卸压/恒阻锚索
Key words
deep mining/dynamic pressure influence/roadway support/surrounding rock control/cutting the top to relieve pressure/constant resistance anchor cable
维普
万方数据