摘要
传统的边坡稳定性评价未量化考虑岩土体强度参数的不确定性和相关性的特点。为实现对堰塞坝的稳定性快速评价,在简化毕肖普法的基础上,基于系统可靠度理论和已有堰塞体材料参数的数据,采用响应面法(RSM)计算可靠度指标,选用Excel软件为载体建立设计程序,采用改进线性法进行系统可靠度的计算,并不设置阈值进行滑动面的筛选,得到够成最危险系统的三个滑动面;最后选用某堰塞坝边坡案例进行计算,结果表明该堰塞体边坡失效概率较低,可保留用于后续的开发利用。
The traditional slope stability evaluation does not consider the uncertainty and correlation of the strength parameters of rock and soil mass.In order to evaluate the stability of the dam quickly,based on the simplified Bishop method,the response surface method(RSM)is used to calculate the reliability index based on the system reliability theory and the data of the material parameters of the dam plug,the design program is established with Excel software as the carrier,and the improved linear method is used to calculate the system reliability without setting the threshold value for the sliding surface three sliding surfaces which can be the most dangerous system are obtained through screening.Finally,a case of a dam is selected for calculation,and the result shows that the failure probability of the slope of the dam is low,which can be reserved for subsequent development and utilization.
作者
赵哲苇
李家欢
李文炜
李中尧
史海平
王保田
王培清
ZHAO Zhewei;LI Jiahuan;LI Wenwei;LI Zhongyao;SHI Haiping;WANG Baotian;WANG Peiqing(Department of Water Conservancy and Civil Engineering,Tibet Agricultural and Animal Husbandry University,Linzhi 860000,China;Key Laboratory of Rock Mechanics and Embankment Engineering,Hohai University,Nanjing 210098,China)
出处
《粉煤灰综合利用》
CAS
2022年第5期9-14,86,共7页
Fly Ash Comprehensive Utilization
基金
西藏自治区自然基金重点项目(XZ 2019 ZR G-56(Z))
西藏农牧学院第四批柔性人才引进项目(藏东南地区粗颗粒混合土力学性质研究)。
关键词
堰塞坝
系统可靠度
简化毕肖普法
响应面法
电子表格算法
landslide dam
system reliability
simplified Bishop method
response surface method
spreadsheet algorithm
