摘要
某水电站深孔泄洪洞进口边坡为典型岩质开挖高边坡,其在施工及运行期的变形稳定性关系到整个工程的安全和效益。通过建立二维有限元模型,考虑边坡在施工及运行期会遇到及可能遇到的11种工况,对深孔泄洪洞进口边坡典型剖面进行变形稳定性分析,并在此基础上对该边坡的加固方案进行优化。结果表明,边坡变形满足整体要求,锚索锚固倾角为5°时为最优加固方案。
The intake slope of deep discharge tunnel in a hydropower station is a typical high rock excavation slope. The deformation and stability of slope in construction and operation periods will influence the security and benefit of whole project. A 2-D finite element model is established to conduct deformation analyses of the slope. The model introduces 11 kinds of conditions which may be happened during either the construction period or the operation period. Based on analysis results, the reinforcement measures of slope are optimized. The calculation and analysis results show that the slope deformation meets the requirements of whole stability, and the optimal scheme of anchor cable is with a angle of 5 degree.
出处
《水力发电》
北大核心
2016年第12期33-37,101,共6页
Water Power
基金
湖北省自然科学基金面上项目(2015CFB545)
水利部公益性行业科研专项(201401029)
国家自然科学基金重点项目(51439003)
关键词
边坡
变形
有限元
加固方案
优化分析
slope
deformation
finite element
reinforcement measure
optimization ana!ysis
