摘要
为探讨泥质夹层对重力坝坝基抗滑稳定的影响,以几内亚苏阿皮蒂水利枢纽为背景,选取47号坝段作为典型砂岩坝段建立三维数值分析模型,采用强度折减法分析泥质夹层埋深、倾角与抗滑安全系数之间的关系,研究47号坝段抗滑失稳模式。结果表明,泥质夹层埋深、倾角与抗滑稳定安全系数呈正比例关系,47号坝段失稳为坝踵岩层断裂滑移模式;在坝趾设置齿槽,坝基抗滑稳定安全系数为3.01,满足规范要求。
In order to discuss the anti-sliding stability of gravity dam foundation with pelitization interlayer,the Souapiti Hydro Project is taken a study case,and a three-dimensional numerical analysis model is established for the No.47 dam section as a typical dam section.The relationship between the buried depth and dip angle of pelitization interlayer and the anti-sliding safety factor is analyzed by strength reduction method,and the dam anti-sliding instability mode is also studied.The results show that the buried depth and dip angle of pelitization interlayer have positively proportional to the safety factor of anti-sliding stability,and the instability mode of No.47 dam section is the rock fracture and sliding in dam heel.By setting dam toe cogging,the anti-sliding stability safety factor can reach 3.01,which meets the requirements of design code.
作者
杨金林
姚帅强
符新阁
陈晓光
YANG Jinlin;YAO Shuaiqiang;FU Xin ge;CHEN Xiaoguang(Yellow River Engineering Consulting Co.,Ltd.,Zhengzhou 450003,Henan,China)
出处
《水力发电》
北大核心
2020年第1期32-35,共4页
Water Power
关键词
泥质夹层
抗滑稳定分析
数值模拟
安全系数
苏阿皮蒂水利枢纽
pelitization interlayer
anti-sliding stability analysis
numerical simulation
safety factor
Souapiti Hydro Project
