潭口二库溢洪道边坡稳定性分析  

Stability Analysis of a Spillway Slope of the Tankou Second Reservoir

作　　者：年夫喜 冯细霞 陈雷 姚晓敏 NIAN Fuxi;FENG Xixia;CHEN Lei;YAO Xiaomin(Hubei Institute of Water Resources Survey and Design,Wuhan 430070)

机构地区：[1]湖北省水利水电规划勘测设计院,武汉430070

出　　处：《土工基础》2024年第2期186-191,共6页Soil Engineering and Foundation

摘　　要：边坡稳定性分析对工程项目建设的安全非常重要。采用极限平衡方法和FLAC3D数值方法分别对潭口二库溢洪道边坡的抗滑稳定和开挖变形特征进行分析,研究了边坡的稳定性系数、位移云图和应力应变云图。结果表明,设计的溢洪道边坡整体稳定性较好,只是开挖面中上浅表层发生了局部破坏,需对该地区同类岩土体采取喷锚等加固措施。结果分析为边坡开挖设计方案和加固措施提供了科学依据,具有一定的理论和实践意义。Stability analysis of the slope is important for the safety of all construction projects.The stability and the excavation deformation characteristics of a spillway slope of the Tankou Second Reservoir is evaluated by the limit equilibrium method and the FLAC3D numerical method,respectively.The factor of safety of the slope,the displacement patterns,and the stress-stain relationships are studied.The results indicate that the overall stability of the spllway slope is satisfactory,with minor local failures occurred at the upper and middle surface of the excavated area.The reinforcement measures of the ground anchors with shotcrete should be adopted,as commonly used in the area.In this paper,the results of the spillway slope numerical simula-tions have provided a scientific reference for the excavation design and the reinforcement measure of the slope,which has an useful theoretical and practical significance.

关 键 词：边坡 稳定性 潭口二库 极限平衡方法 FLAC3D数值方法 

分 类 号：P642[天文地球—工程地质学]