长江科学院院报2012，Vol.29Issue(12)：73-77,5.DOI:10.3969/j.issn.1001-5485.2012.12.015
复杂地质条件下洞室围岩初始地应力场研究
Initial Geostress Field of the Surrounding Rock of Underground Cavern Under Complex Geological Condition
摘要
Abstract
The determination of initial geo-stress of rock mass is the basis of stability assessment for underground cavern. By analyzing the in-situ measurements of geo-stress, we investigated the effect of geological structure such as fault on the initial geostress distribution, and found that the deformation modulus ratio of the surrounding rock mass is one of the most important factors affecting the initial geo-stress. We also presented a back analysis method in consideration of the variable stiffness which reflects the stress release induced by faults. The calculation results of initial geostress involving and not involving the effect of fault effect are compared with the measured values, and it' s found that the result considering the fault effect is more consistent with the measured result, which verifies the rationality of this method关键词
地下洞室/初始地应力场/变刚度/构造应力释放效应Key words
underground cavern/ initial geo-stress field/ variable stiffness/ tectonic-stress release effect of fault分类
建筑与水利引用本文复制引用
冯树荣,蒋中明,赵海斌..复杂地质条件下洞室围岩初始地应力场研究[J].长江科学院院报,2012,29(12):73-77,5.基金项目
中国水电顾问集团科技计划项目(2010680) （2010680）
