摘要
采用块体系统分析方法,针对岩体结构面的材料非连续性、变形的非连续性以及大变形等特征,建立了水工洞室开挖稳定性分析的非连续变形分析模型,并以某大型水电站地下厂房为例,模拟了洞室开挖。计算模型详细模拟了围岩内的各条断层,并采用统计模型生成各组节理,按试验资料确定其非线性参数,通过分析,得到了开挖后围岩的应力场和位移场.
Based on the block system theory and discontinuous deformation analysis,an numerical analysis model is built for the stability analysis of jointed rock mass arround underground hydraulic powerhouse. Considering the material discontinuity of rock mass and its joints and faults,the model can simulate the large and discontinuous deformation.According to the geological investigation data,by use of the statistical method to generate the joints,the model is used to simulate the excavation of a large underground powerhouse of hydraulic power station.The displacement and stress field of the surrounding rocks after excavation are obtained and some useful results are found.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2003年第z1期2299-2303,共5页
Chinese Journal of Rock Mechanics and Engineering
基金
河海大学科技创新基金资助项目(200341164)
关键词
数值分析
非连续变形分析
水工洞室
围岩稳定性
numerical analysis
discontinuous deformation analysis (DDA)
underground hydraulic powerhouse
stability of rock mass
