溢流式面板堆石坝坝身稳定因素敏感性研究  

Sensitivity study on stability factors of overflow concrete face rockfill dam

作　　者：耿旭 孔思丽 黄质宏 廖海梅 龚红伟 郭建强 王国庆 GENG Xu;KONG Sili;HUANG Zhihong;LIAO Haimei;GONG Hongwei;GUO Jianqiang;WANG Guoqing(Guizhou Xinzhong Engineering Co.,Ltd.,Guiyang 550000,China;College of Civil Engineering,Guizhou University,Guiyang 550000,China)

机构地区：[1]贵州新中水工程有限公司,贵州贵阳550000 [2]贵州大学土木工程学院,贵州贵阳550000

出　　处：《水利水电快报》2020年第8期52-57,共6页Express Water Resources & Hydropower Information

基　　金：贵州省水利科技专项经费项目资助(KT201824)。

摘　　要：为了探索锚固梁宽度和高度、锚拉筋长度、锚固板长度、泄洪量以及堰顶插筋长度等因素对溢流式面板堆石坝坝身稳定的影响,采用正交设计方法,依托在建工程松树林水库,利用非线性弹性模型(邓肯E-B模型)和非线性圆弧法,确定溢流面坝体稳定安全系数。通过极差分析和方差分析,确定各因素对溢流式面板堆石坝溢流面坝身稳定影响的敏感性和显著性。结果表明:锚固钢筋长度对安全系数的影响最大,且高度显著;流量对安全系数的影响最小,且不显著。To explore the influences of the factors,such as the width and height of anchorage beam,the length of anchorage bar,the length of anchorage plate,the flood discharge and the length of reinforcement on weir top,on the stability of overflow concrete face rockfill dam,on the basis of the orthogonal design method,the stability safety coefficient of Songshulin Reservoir(in construction)dam is determined by nonlinear elastic model(Duncan E-B model)and nonlinear circular arc method.Through range analysis and variance analysis,the sensitivity and significance of various factors to the stability of overflow concrete face rockfill dam are obtained.The results show that the length of anchored reinforcement has the largest impact on the safety factor and is highly significant;the influence of flow rate on safety factor is the smallest and is not significant.

关 键 词：坝身稳定 敏感性分析 邓肯E-B模型 非线性圆弧法 锚固 溢流式面板堆石坝 

分 类 号：TV641.43[水利工程—水利水电工程]