岗曲河水电站厂房后边坡开挖和支护稳定性分析  

Stability Analysis of Excavation and Retaining for Slope behind Gangqu River Hydropower Station

作　　者：刘凤[1] 喻和平[1] 秦卫星[1] 孟晓凤[1] 

机构地区：[1]长沙理工大学水利工程学院,湖南长沙410076

出　　处：《中国农村水利水电》2010年第3期152-155,共4页China Rural Water and Hydropower

摘　　要：岗曲河水电站厂房后边坡位于滇西南高山峡谷地区,地形地质条件复杂,坡体开挖完成后坡脚出现裂缝,为确保工程安全,采用通用有限差分程序FLAC3D,对岗曲河水电站厂房后边坡的开挖和支护进行了仿真模拟,通过分析开挖过程中边坡的变形,应力状态,塑性区分布和锚杆锚索受力情况,得出边坡在现有支护措施下稳定性较差,新增加固支护措施后,边坡的稳定性得到改善。The slope behind the Gangqu River Hydropower Plant is located in alpine and gorge regions in the southwest of Yunnan province, where the geological and terrain conditions are complex. After the completion of slope excavation, the concrete that clings to the slope produces cracks. To ensure the safety of projects, a common finite-difference program FLAC3D is adopted in this paper, simulating the excavation and retaining of the slope behind the Gangqu River Hydropower Station. By analyzing the slope deformation, stress state, distribution of plastic zones and force of the anchors during the excavating progress, we can reach the conclusion that the slope is unstable in the existing support measures, the slope stability is improved after newly added reinforcement measures.

关 键 词：岗曲河 边坡稳定 开挖 支护 有限差分 

分 类 号：TV731[水利工程—水利水电工程]