摘要
结合我国西部某地下厂房洞室群区域地形地质条件,采用三维非线性有限元法模拟洞室群分级开挖全过程,揭示了围岩及结构的应力场、位移场及破坏区分布规律,探明了围岩可能的失稳部位和失稳方式以及主厂房、压力管道、尾水调压室及尾水洞等主要洞室分级开挖过程中的围岩变位与稳定性,为类似工程的设计与施工提供参考。
Considering topographical and geologic conditions in an underground powerhouse complex in the West China,3-D nonlinear finite element method is used to simulate overall process of stage excavation in caverns,reveal stress field,displacement field and failure area distribution of surrounding rock and structures,detect destabilization locations and modes,discover surrounding rock displacement and stability during stage excavation of main caverns,including machine hall cavern,penstock tunnel,tailrace surge chamber and tailrace tunnel.These analysis results provide references for design and construction of similar projects.
出处
《四川水力发电》
2009年第5期88-89,96,共3页
Sichuan Hydropower
关键词
地下厂房
分级开挖
围岩稳定性
非线性
有限元法
数值模拟
underground powerhouse
stage excavation
surrounding rock stability
nonlinear
finite element method
