巷道掘进过断层全锚索支护技术研究

Study on Full-anchor-cable Support Technology of the Roadway Driving Fault

由于某矿5306运输巷受F303断层影响,围岩破碎,巷道原采用的锚网索支护参数难以满足围岩控制需要,在对巷道原锚杆支护体系失效原因分析基础上,提出采用全锚索支护技术对断层破碎带围岩进行控制,并详细对支护原理、支护参数进行阐述。现场应用后,巷道顶板、巷帮变形量分别均控制在72 mm、58 mm以内,围岩控制效果显著。

5306 transport roadway is affected by F303 fault, surrounding rock is broken, and the supporting parameters of anchor mesh cable used in roadway are difficult to meet the needs of surrounding rock control. Based on the analysis of the failure cause of the original bolt support system of roadway, the whole bolt support technology is put forward to control the surrounding rock of fault broken zone, and the supporting principle and supporting parameters are expounded in detail. After field application, the deformation of roadway roof and roadway side are controlled within72 mm、58 mm respectively, and the control effect of surrounding rock is remarkable.