摘要
以比利时泥岩高放废物处置库工程为背景,在全面分析盾构施工过程中影响围岩稳定性各主要因素的基础上,根据有效应力分析方法,建立泥岩弹塑性渗流-应力耦合分析理论模型,提出一种能够模拟盾构机掘进隧道施工的三维非线性有限元模拟方法,分析盾构推进过程中隧道围岩孔隙压力、应力场、位移场以及混凝土管片衬砌应力的分布规律。研究结果可为泥岩盾构隧道工程的施工及监控量测提供参考。
Taking the high-level radioactive waste repository in Belgium as background,based on the comprehensive analysis of the main factors influencing the stability of surrounding rock during tunnel excavation,an elastoplastic seepage flow-stress coupling analysis model is set up according to the effective stress analysis method;and a 3D nonlinear finite element method is put forward to simulate the excavation of tunnel by shield machine. The distributions of pore pressure,stress field,displacement field of surrounding rock and the lining stress of concrete segment are analyzed in detail. The results can provide references to construction and field measurement of mudstone shield tunnel.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2007年第S2期3897-3903,共7页
Chinese Journal of Rock Mechanics and Engineering
基金
国家自然科学基金资助项目(50579087
90510019)
关键词
岩石力学
泥岩
盾构隧道
流固耦合
有限元法
rock mechanics
mudstone
shield tunnel
seepage-stress coupling
finite element method
