水利水电技术2017，Vol.48Issue(12)：188-194,7.DOI:10.13928/j.cnki.wrahe.2017.12.030
某水电工程边坡开挖及支护过程稳定性分析
Stability analysis on slope of a hydropower project during excavation and supporting
摘要
Abstract
In order to analyze the variation of the stability of the slope of hydropower project during the whole process of excavation and supporting,the stability coefficients under several working conditions are calculated with the limit equilibrium theorybased Morgenstern-Price method for all the deformation modes during the excavation and supporting through determining the slope deformation mode with the relevant geological analysis and deformation monitoring by taking the slope excavation for a hydropower station in the Southwest China as the study objective.The result shows that all the stability coefficients of six sliding modes under the persistent,accidental and transient conditions can meet the requirement of the relevant criteria.After the application of the secondary anchorage cable,the stability coefficient of the whole slope is larger than that of the original one and then the control effect of anchorage cable on the slope is obvious,thus the supporting effect is better.The stability coefficient of the slope is gradually increased before the excavation till the slope toe,and thereby,the slope excavation is favorable for the stability of the slope,while the stability coefficient of the slope is suddenly decreased after the excavation of the slope,consequently,the excavation is unfavorable for the slope stability;thus the rock mass at the slope toe has an obvious effect on the slope stability.The study result can provide references for analysis of the slope stability for hydropower project as well as the excavation and supporting of the slope for the similar project.关键词
水电工程边坡/开挖支护/稳定系数/极限平衡Key words
slope of hydropower project/excavation and supporting/stability coefficient/limit equilibrium分类
交通运输引用本文复制引用
崔玉龙,邓建辉..某水电工程边坡开挖及支护过程稳定性分析[J].水利水电技术,2017,48(12):188-194,7.基金项目
国家自然科学基金青年科学基金项目(41502335) （41502335）
安徽理工大学博士、硕士基金(11678) （11678）
