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分析了断层破碎带煤巷围岩变形破坏的原因,并提出了高强高预紧力锚杆支护、大延伸率锚杆支护、锚索加强支护等断层破碎带煤巷围岩控制技术。采用该支护技术在2401工作面回采巷道进行了工业性试验,取得了较好的围岩控制效果。
The reason of the surrounding rock deformation and failure in the tunnel with broken coal seam was analyzed and the control technology of the surrounding rock of the coal seam with fault broken zone with high strength and high prestressing bolt support, . Adopting this support technology, industrial tests have been carried out in the mining roadway of 2401 working face and good surrounding rock control effect has been achieved.