摘要
西龙池地下洞室群围岩呈缓倾角互层状结构,层理发育,岩性复杂,洞室开挖过程中,各种地质因素交互作用,洞室间相互影响。对复杂变化地质环境下的主厂房围岩进行了各种因素作用下的综合稳定分析,并依据多种测试手段,对开挖后围岩的稳定性和变形进行实时监测,掌握了洞室层状围岩变形破坏特征。以地下洞室开挖为算例,研究了围岩的力学动态,得出一些有益的认识和结论。围岩位移量计算结果与监测数据较好吻合,为施工开挖步序提供了可靠的依据。
Composite rock mass of underground chambers is alternatively stratified and horizontal bedding in Xilongchi. Geological factors of chambers interact during excavation process. The comprehensive stability of rock mass induced by couple factors in complex environment is analyzed. The stability and deformation of rock mass near the wall of houses are determined by using several measurements. The characteristics of layer composite rock mass deformation are obtained. Through the calculation examples of an underground opening, the dynamic states of the surrounding rock are investigated, and some conclusions are drawn finally. Case study shows that the calculated displacements by the method agree well with the measured values. The results provide a reliable basis for project construction.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2005年第A02期5956-5960,共5页
Chinese Journal of Rock Mechanics and Engineering
基金
2002年高等学校博士学科点专项科研资助项目(20020008021)
关键词
岩石力学
地下洞室
围岩稳定性
数值模拟
层状复合岩体
rock mechanics
underground excavation. stability of surrounding rock
numerical simulatiom layer composite rock mass
