组合防渗方案对土石坝稳定的影响研究  

Research on the Influence of Combined Anti-Seepage Scheme on Stability of Earth-Rock Dam

作　　者：张正印 ZHANG Zhengyin(School of Civil and Transportation Engineering,Qinghai Minzu University,Xining 810007,China)

机构地区：[1]青海民族大学土木与交通工程学院,青海西宁810007

出　　处：《建筑经济》2024年第S01期839-842,共4页Construction Economy

基　　金：青海民族大学2022年大学生创新创业训练计划项目(DCXM-2022-36)。

摘　　要：以某粉质粘土心墙土石坝为研究对象,运用Geo-studio有限元软件建立坝体二维模型,研究组合防渗方案对土石坝稳定性的影响。采用Geo-studio数值模拟的方法,比较不同长度水平黏土铺盖、不同深度垂直混凝土防渗墙和组合防渗方案的渗流流量、水力坡降变化情况,评估其在实际工程中的效果。结果表明,组合防渗方案能降低坝体渗流流量、水力坡降,有效提高土石坝的稳定性,对于保障水库安全具有重要意义。The research focuses on a silty clay core earth-rock dam,using Geo-studio finite element software to establish a two-dimensional model of the dam body and study the impact of combined anti-seepage measures on dam stability.The numerical simulation method in Geo-studio was employed to compare seepage flow and hydraulic gradient changes for different lengths of horizontal clay bedrolls,various depths of vertical concrete cutoff walls,and combined anti-seepage measures,evaluating their practical project effects.Results indicate that the combined anti-seepage scheme can effectively reduce seepage flow and hydraulic slope in the dam body,significantly improving earth-rock dam stability with important implications for reservoir safety.

关 键 词：土石坝 组合防渗方案 稳定性 数值模拟 

分 类 号：TV641.1[水利工程—水利水电工程] TV543.8