龙塘大坝枢纽改造工程拦河闸防渗墙设计  

Cutoff Wall Design for Barrage of Longtang Dam Renovation Project

作　　者：刘德宇 曹阳[1] 武帅 LIU Deyu;CAO Yang;WU Shuai(China Water Resources Beifang Investigation,Design and Research Co.Ltd.,Tianjin,300222;MWR General Institute of Water Resources and Hydropower Planning and Design(GIWP),China,Beijing,100120)

机构地区：[1]中水北方勘测设计研究有限责任公司,天津300222 [2]水利部水利水电规划设计总院,北京100120

出　　处：《水利水电工程设计》2025年第1期38-41,45,共5页Design of Water Resources & Hydroelectric Engineering

摘　　要：介绍了海口市南渡江龙塘大坝枢纽改造工程拦河闸底部防渗墙设计。根据工程地质条件及防渗要求,主要采用改进阻力系数法进行拦河闸防渗墙的设计计算,依据物理力学及特性指标进行现场塑性混凝土配合比设计,对防渗墙与闸底板的衔接及墙体质量控制等措施进行了总结。在成墙后的28 d对墙身进行了质量检测,据检测及实测数据显示,塑性混凝土防渗墙的防渗效果良好,渗透系数及抗压强度等主要指标满足规范要求,可为类似工程提供借鉴。This paper introduces the design of a cutoff wall at the base of the barrage for the Longtang Dam Renovation Project on the Nandu River in Haikou City.Considering the engineering geological conditions and seepage control requirements,an improved resistance coefficient method is primarily utilized for the cutoff wall design calculations.A plastic concrete mix is developed on-site based on physical mechanics and characteristic parameters.The paper outlines the measures implemented to ensure a proper connection between the cutoff wall and the barrage’s bottom plate,as well as the quality control procedures for the wall structure.Quality inspections are conducted 28 d after wall construction.The inspection and measurement datas indicate that the plastic concrete cutoff wall exhibits excellent seepage control performance,with key indicators such as permeability coefficient and compressive strength meeting the standard requirements.These findings provide valuable references and guidance for similar projects.

关 键 词：塑性混凝土防渗墙 配合比 连接加固 质量检测 

分 类 号：TV222[水利工程—水工结构工程]