南阳坡矿5704回风巷道支护参数研究

Study on Supporting Parameters of the 5704 Return Air Roadway in Nanyangpo Mine

为确定南阳坡矿5704回风巷道支护设计参数,采用理论计算与数值模拟结合的方法对锚杆、锚索支护设计参数进行了分析,确定了锚杆、锚索的长度及间排距等关键参数。现场应用表明:巷道两帮累计移近量为40 mm,顶板移近量为25 mm,能够满足设计要求,可以保障工作面生产作业的正常运行。

In order to determine the supporting design parameters of the 5704 return air roadway in Nanyangpo Mine,the supporting design parameters of bolt and anchor cable were analyzed by combining theoretical calculation with numerical simulation,and the key parameters such as the length and spacing of bolt and anchor cable were determined.The field application shows that the cumulative convergence of the two sides of the roadway is 40 mm,and the convergence of the roof is 25 mm,which can meet the design requirements and ensure the normal operation of the working face.