西藏扎拉水电站陡倾层状岩质边坡稳定性分析及支护设计  

Stability analysis and support design of steeply dipping stratified rocky slopes of Xizang Zhala Hydropower Station

作　　者：徐鹏 胡田清 丁亚楠 XU Peng;HU Tianqing;DING Yanan(Changjiang Survey,Planning,Design and Research Co.,Ltd.,Wuhan 430010,China;National Dam Safety Research Center,Wuhan 430010,China)

机构地区：[1]长江勘测规划设计研究有限责任公司,湖北武汉430010 [2]国家大坝安全工程技术研究中心,湖北武汉430010

出　　处：《水利水电快报》2024年第6期38-42,共5页Express Water Resources & Hydropower Information

基　　金：长江勘测规划设计研究有限责任公司自主创新项目(CX2020Z13)。

摘　　要：为探究陡倾层状岩质边坡支护设计及稳定计算方法,结合扎拉水电站边坡开挖支护工程,通过分析边坡结构类型,研究边坡整体失稳破坏模式,分别考虑锚杆抗拉和抗剪作用,分析锚固力对边坡稳定性的影响规律,探究该边坡顺层滑移稳定性及支护设计方案。计算结果表明:不同规范推荐的安全系数计算方法得到的边坡稳定分析结论基本一致,考虑锚杆抗剪作用计算得到的边坡抗滑稳定安全系数较大,且数值计算分析结果验证了支护设计方案的合理性。研究成果可为类似边坡治理工程提供参考。In order to explore the support and design method of steep dip stratified rock slope,based on a slope pro-ject of Zhala Hydropower Station,the overall instability failure mode of slope was studied by analyzing the slope structure type,the stability and support design of the slope were explored and the impact of anchoring force on slope stability was analyzed by considering the tensile and shear strength of anchor bolt respectively.The calculation re-sults showed that the conclusions of slope stability calculated by different methods were basically consistent.A high-er safety factor was derived by considering the shear strength of anchor bolt,and the numerical analysis results veri-fied the rationality of the support design.The research results can provide a reference for similar slope projects.

关 键 词：顺层岩质边坡 顺层滑动 边坡治理 锚杆抗剪强度 扎拉水电站 

分 类 号：TV223[水利工程—水工结构工程]