摘要
按照结构面的真实产状和面积,建立了包含41条长大结构面和5条断层的三维有限元模型。研究了三峡工程左厂3#坝段的深层抗滑稳定问题以及厂房的破坏模式,建议了一个实用的基于三维有限元计算结果的坝基强度储备安全系数的综合判断准则。根据计算结果,建议3#坝段的储备安全系数为3.5左右。计算结果表明,厂房是安全的。
A 3D finite element model including 41 large structures and 5 faults based on the real geometry is established. The model is used to study the stability of 3# dam foundation of the left power house of the Three Georges Project and the failure mode of power house. A rule for estimating safety factor of dam foundation in terms of strength reservation is proposed based on the results of the 3D finite element analyses. For 3# dam foundation,the suggested safety factor is about 3.5 based on the computation results,which also confirms the safety of power house.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2004年第7期1066-1072,共7页
Chinese Journal of Rock Mechanics and Engineering
基金
国家自然科学基金(10172057
10202019)
陕西省教育厅基金(02JK126)资助项目。
关键词
岩石力学
深层滑动
安全系数
坝基
三维有限元模型
rock mechanics,3D model based on real attitude,deep sliding,safety factor,dam foundation
