黏土混凝土防渗墙在罗田水库大坝防渗设计中的应用  

Application of clay concrete anti-seepage wall in the anti-seepage design of Luotian Reservoir dam

作　　者：杨波 高阳 刘现涛 YANG Bo;GAO Yang;LIU Xiantao(Shenzhen Gongming Water Supply and Storage Project Management Office,Shenzhen 518107,Guangdong,China;Changjiang River Survey,Planning,Design and Research Co.,Ltd.,Wuhan 430014,Hubei,China)

机构地区：[1]深圳市公明供水调蓄工程管理处,广东深圳518107 [2]长江勘测规划设计研究有限责任公司,湖北武汉430014

出　　处：《水利水电技术(中英文)》2024年第S2期203-207,共5页Water Resources and Hydropower Engineering

摘　　要：罗田水库作为珠江三角洲水资源配置工程的重要转输节点,其安全运行对区域水资源保障至关重要。为确保大坝安全和提高防渗效果,对新增混凝土防渗墙、高压旋喷灌浆、现状混凝土防渗墙改造等三种防渗方案进行综合比选,对防渗墙的结构、材料、施工工艺等进行设计,对加固后的大坝进行渗流稳定复核计算。结果显示,防渗墙显著降低浸润线出逸点,最大渗透坡降值亦降至规定允许值范围之内;大坝设计断面上、下游边坡均能满足抗滑稳定要求。通过方案设计和数据分析,验证了黏土混凝土防渗墙的有效性和可行性,为类似水利工程提供了参考。As an important transfer node of the Pearl River Delta water resource allocation project,the safe operation of Luotian Reservoir is crucial to the regional water resource security.To ensure the safety of the dam and improve the anti-seepage effect,through analyzing the main problems existing in the current dam anti-seepage system,a comprehensive comparison and selection of three anti-seepage schemes including new concrete anti-seepage wall,high-pressure rotary jet grouting,and reconstruction of the existing concrete anti-seepage wall are conducted.The structure,materials,construction process,etc.of the anti-seepage wall are designed,and the seepage stability of the reinforced dam is reviewed and calculated.The result show that the exit point of the saturation line is significantly reduced,and the maximum seepage gradient value is also reduced to within the specified allowable range;the upstream and downstream slopes of the dam design section can meet the requirements of anti-sliding stability.Through scheme design and data analysis,the effectiveness and feasibility of the clay concrete anti-seepage wall are verified,providing a reference for similar water conservancy projects.

关 键 词：黏土混凝土 防渗墙 罗田水库 大坝加固 防渗设计 

分 类 号：TV223.4[水利工程—水工结构工程]