松软围岩溜子道巷道支护参数优化技术研究

Study on support parameters optimization technology of roadway with soft surrounding rock

针对大社矿921102溜子道掘进工作面锚杆、锚索着力基础较弱、顶板稳定性差,且参数不合理等情况,导致巷道无法在服务期内安全使用的问题,根据巷道实际所处的地质情况,采用理论分析和现场监测相结合的综合研究方法,进行锚杆+锚索联合支护。现场工业性试验表明,使用该支护方案,巷道顶底板及两帮移近量减小,能够缓解工作面巷道围岩变形破坏的问题,对类似地质条件下的溜子道掘进工作面巷道围岩控制具有借鉴意义。

There occurred problems of weak foundation of bolt and anchor cable,poor roof stability and unreasonable parameters in 921102 roadway heading face of Dashe Mine,and the roadway could not be used safely during the service period.According to the actual geological situation of the roadway,the comprehensive research method of theoretical analysis and field monitoring was adopted to carry out the combined support of bolt and anchor cable.The field industrial test showed that the support scheme reduced the displacement of the roof and floor of the roadway and the two sides,which could alleviate the deformation and failure of the surrounding rock of the roadway in the working face.It has reference significance for the surrounding rock control of the roadway in the slipway tunneling face under similar geological conditions.