中文摘要：

为了合理确定软岩巷道桁架锚索支护参数设计，通过理论分析，FLAC＾3D数值模拟和SPSS差分析正交试验等方法，结合木孔煤矿实际地质环境，对软岩巷道的预应力桁架锚索支护参数进行优化分析，使桁架锚索组合支护能力充分发挥，避免支护材料浪费和支护成本偏高，现场观测结果显示：两帮水平位移最大值为260mm，顶板最大下沉量为163mm，巷道围岩的收敛率在有效控制范围内，预应力桁架锚索支护对提高巷道围岩的整体稳定性有良好效果．

英文摘要：

In order to determine the reasonable design of truss and anchor rope parameters in soft rock roadway, this paper, based on the theoretical analysis, the FLAC^3D numerical simulation and the SPSS orthogonal experiment method, together with the practical Mukong Coal Mine geological environment, has optimized the prestressed truss and anchor rope in soft rock roadway support parameter, which can give a full play to truss anchor cable combined supporting ability and avoid supporting material waste and the high cost of supporting. Field observations indicate that the largest value of the two sides moving closer is 145 mm. The roof subsidence maximum is 166 mm. Roadway surrounding rock convergence rate is within the valid range. Support of truss and anchor rooe can improve the overall stability of roadway surrounding rock with good results.