面板堆石坝坝身溢洪道局部和整体稳定性分析  

Local and Overall Stability Analysis on Dam Body-Spillway of Faced Rock-Fill Dam

作　　者：廖海梅[1] 赵青[1] 鲁思远 黎娜[1] 

机构地区：[1]贵州大学土木工程学院,贵州贵阳550025

出　　处：《人民黄河》2015年第5期89-92,96,共5页Yellow River

基　　金：贵州大学研究生创新基金资助项目(研理工2013048);贵州大学引进人才基金资助项目(贵大人基合字(2009)012号)

摘　　要：研究了岩基上面板堆石坝坝身溢洪道的稳定性,包括泄槽底板的局部稳定性和溢洪道与坝体的整体稳定性。首先推导带水平加固措施的溢洪道底板静力抗滑稳定安全系数计算式,分析坝身溢洪道局部稳定性;然后运用正交设计直观分析方法,对底板抗滑稳定敏感性进行研究。结果表明,增大加固措施长度、减小溢流平均流速及底板长度有利于泄槽局部稳定,而底板厚度和宽度对稳定性的影响较弱。以某溢流面板堆石坝工程为例,分别运用底板安全系数计算式和有限元强度折减法分析溢洪道的局部和整体稳定性,结果表明该溢流面板堆石坝溢洪道满足稳定要求。It studied the local and overall spillway stability of overflow concrete faced rock - fill dam located on batholith. Firstly it deduced anti - sliding stability security coefficient - calculation formula of bottom plate, reinforced by level structure and located in overflow faced rock - fill dam spillway and analyzed the local stability of dam body - spillway. It studied the sensibility about bottom plate anti - sliding sta- bility applying with orthogonal design - direct analysis, which indicated increasing the length of reinforced structure and reducing the length of bottom slab and overflow average velocity contribute greatly to the local spillway stability, but thickness and width of bottom slab less. It took one overflow faced rock - fill dam as a case study of local and overall spillway stability by utilizing security coefficient - calculation formula and FEM strength reduction respectively. The results indicate that the spillway of overflow concrete faced rock - fill dam can keep stability.

关 键 词：面板堆石坝 坝身溢洪道 局部稳定 整体稳定 

分 类 号：TV651.1[水利工程—水利水电工程]