巷道变形及衬砌受力的影响因素敏感性分析

摘要

Sensitivity analysis of influence factors on roadway deformation and lining axial force is conducted by using orthogonal numerical simulation experiment which has six factors (depth ,lateral pressure coefficient ,Young's modulus ,Poisson's ratio ,cohesion ,internal angle of friction) with each factor having five levels .The results show that lateral pressure coefficient relative to lithology conditions is the most significant factor affecting the roadway deformation and lining axial force which increases rapidly with lateral pressure coefficient increasing .Roadway deformation and lining axial force exhibit the same trend for each parameter within a certain range of the swing ,but the sensitivity of the various parameters for roadway deformation and lining axial force is difference .%采用正交数值试验的方法对影响巷道变形及衬砌轴力的各因素进行了多因素敏感性分析。选择埋深、侧压力系数、弹性模量、泊松比、黏聚力、内摩擦角等6个因素、5个水平的正交设计进行了相应数值模型试验。结果表明：侧压力系数相对于岩性条件是影响巷道变形和衬砌轴力最为显著性的因素，随侧压力系数的增大，巷道变形和衬砌轴力都迅速增大。巷道变形和衬砌轴力对于各参数在一定范围内的摆幅表现出相同的变化趋势，但各参数对于巷道变形和衬砌轴力的敏感程度不同。