Numerical simulation on shaft lining stresses analysis of operating mine with seasonal temperature change

摘要：

Based on monitored axial strain data of a double-layer shaft lining, space axial-symmetrical FEM model of the shaft lining was built by ABAQUS to simulate its strain and stress developing laws in 2 years (start at summer). The model considers 4 main kinds of external forces acting on shaft lining, i.e. its self-weight, horizontal ground pressure, vertical additional force, as well as thermal stress. Both the monitored and simulated axial strain developing law wave as temperature changing law, but accumulate on its value. With the combined effects of periodicity changed thermal stress and accumulating vertical additional force, equivalent stress of outside lining gradually exceeds that of inside lining, reaching the maximum value at winter with thermal stress weight factor of 6%. The thermal stress would certainly exacerbate the rupture of shaft lining, so thermal stress must be considered when designing a shaft lining structure.

关键词： rupture of shaft lining vertical additional force thermal stress monitored strain data numerical simulation

作者: Zhou Jie Zhou Guo-qing Shang Xiang-yu Li Ting

作者单位: State Key Laboratory for Geomechanics & Deep Underground Engineering, China University of Mining & T State Key Laboratory for Geomechanics & Deep Underground Engineering, China University of Mining & T

会议类型: 国际会议

会议名称: The 6th International Conference on Mining Science & Technology ICMST 2009(第六届国际矿业科学技术大会)

会议地点: 徐州

会议语种:英文

页码: 1-6

在线出版日期: 2009-10-18（万方平台首次上网日期，不代表论文的发表时间）