某水利枢纽坝前堆积体强度参数取值及稳定性评价研究  

Strength Parameters and Stability Analysis of Accumulation Body in Front of a Hydro Project

作　　者：唐良琴[1] 毛添 余先华[2] TANG Liangqin MAO Tian YU Xianhua(Key Laboratory of Hydraulic and Waterway Engineering of the Ministry of Education, Chongqing Jiaotong University, Chongqing 400074, China Shapingba Soboffice of Chongqing Municipal Land and Resources Bureauy, Chongqing 400038, China)

机构地区：[1]重庆交通大学水利水运工程教育部重点实验室,重庆400074 [2]重庆市沙坪坝区国土资源管理分局,重庆400038

出　　处：《人民珠江》2017年第6期11-15,共5页Pearl River

基　　金：国家自然科学基金资助项目基于物源动态演化过程地震区泥石流风险预报机制研究(No.41601565);重庆交通大学水利水运工程教育部重点实验室暨国家内河航道整治工程技术研究中心开放基金资助项目长江上游典型通航河段滑坡堵江危险性及应急预案研究(No.SLK2015B07)

摘　　要：某水利枢纽坝前左岸存在一堆积体,该堆积体的失稳将给工程带来不利影响。在分析该堆积体工程地质特征基础上,通过大剪试验、测量自然坡角和统计平洞弃渣坡角获得了堆积体及滑带的强度参数,并采用毕肖普条分法(圆弧搜索滑动面)、传递系数法(非圆弧整体滑动)和摩根斯坦法对坝前堆积体进行了稳定性计算分析。结果表明:堆积体在天然状态下处于稳定状态,在水库蓄水及地震影响下将发生失稳。There is an accumulation body in front of a hydro project dam left bank. The instability of the accumulation body will have adverse impact on the engineering. Based on the analysis of engineering geological characteristics of the accumulation body, through the large shear test, the measuring of the natural slope angle and the statistical of slope angle of adit slag, strength parameters of the accumulation body and the sliding zone were obtained. The stability of the accumulation body was calculated and analyzed by using Bishop Slice method（ search arc slide surface）, transfer coefficient method（ non-arc overall slide） and Morgenstern law. The results show that the accumulation body is in a stable state under natural conditions, but by the influence of the earthquake damage, unstable failure will occur in the accumulation body.

关 键 词：堆积体 滑带 强度参数 稳定性分析 

分 类 号：TU443[建筑科学—岩土工程]