考虑巷道轴向影响的地下围岩应力场简化模型  

The simplified model of underground stress field around surrounding rocks considering the axial effect of roadways

作　　者：李华祥[1] 邹喜正[1] 

机构地区：[1]中国矿业大学

出　　处：《山西矿业学院学报》1997年第4期320-325,共6页

摘　　要：由于多种因素影响的缘故，地下巷道轴向往往与最大主应力方向并不一致，这使巷道问题视为平面应变问题失去了应有的基础。从空间三维应力场简化模式出发，推导出圆形巷道围岩应力场与巷道轴向的对应关系，并提出了将广义平面应变问题转化为狭义平面应变问题的应力修正公式，这为巷道问题的理论分析与数值计算提供了必要的理论依据。? Usually,because of the effect of many factors,the axial location of underground roadways is not in accordance with the direction of maximum principal stress,which makes the method treating roadways questions as plane strain questions lost its bases.Based on the simplified model of space triaxial stress,the paper gives the relation between the surrounding stress field of circle section roadways and the axial location of roadways,and comes up with an adjusted stress formula converting generalized plane strain questions to restricted plane strain questions,which provides necessary bases for theoretical analyses and numerical calculation about roadways.

关 键 词：矿井 巷道 围岩 应力场 简化模型 

分 类 号：TD311[矿业工程—矿井建设]