摘要
溪洛渡坝区属中等地应力区,为确保左岸拱肩槽边坡的安全,采用三维弹粘塑性有限单元法分别对自重应力场与构造应力场下溪洛渡左岸拱肩槽边坡开挖全过程进行了系统仿真模拟,研究了开挖过程边坡岩体的位移、应力及安全系数分布规律,对两种初始地应力场下的边坡稳定性进行了分析与评价。分析结果表明左岸拱肩槽人工开挖边坡稳定性良好。最后还结合分析成果对工程的设计与施工提出了相关建议。
The geostress field of dam site at Xiluodu arch dam is middle level, to ensure safety of the slope in left abutment trough, under gravitational and tectonic initial geostress field separately, the whole excavation processing of the excavation slope in left abutment trough of Xiluodu Hydropower Project is simulated systematically with 3D elasto-viscoplastic finite element method （FEM）, distribution patterns of stress, displacement and safety factor of the rock slope are analyzed and slope stability is evaluated under the two initial geostress fields. Research results show that the excavation slope is stable and safe. Finally, some suggestions are made for the following engineering design and construction according to research findings.
出处
《中国农村水利水电》
北大核心
2008年第8期91-93,97,共4页
China Rural Water and Hydropower
基金
中国水电顾问集团成都勘测设计研究院科研项目
长沙理工大学创新团队计划(2007-005)
长沙理工大学人才引进基金资助
关键词
溪洛渡
开挖边坡
初始地应力场
边坡稳定
弹粘塑性有限元
Xiluodu Hydropower Project
excavation slope
initial geostress field
slope stability
elasto-viscoplastic FEM
