小胡楼水库除险加固中混凝土防渗墙施工技术  

Research on Construction Technology of Concrete Anti-seepage Wall in the Reinforcement of Xiaohulou Reservoir

作　　者：刘明涛 LIU Mingtao(Xinyang Guangshan County Water Conservancy Bureau,Xinyang 465400,China)

机构地区：[1]河南省信阳市光山县水利局,河南信阳465400

出　　处：《河南水利与南水北调》2024年第1期41-42,共2页Henan Water Resources & South-to-North Water Diversion

摘　　要：水利工程混凝土防渗墙施工时,由于缺乏对水库客观环境条件的分析,导致防渗墙的防渗性能难以满足水库除险加固工程的需求。为此,提出小胡楼水库除险加固中混凝土防渗墙施工技术研究。按照减水率控制在25%以上,含气量控制在5.0以内在28 d内,混凝土的收缩率控制在110%以内的标准,对具体的施工混凝土进行配制,在计算了实际的水力情况基础上,确定具体的混凝土防渗墙底宽参数,最后通过在防渗墙框架上设置灌浆孔,进行灌浆施工,完成混凝土防渗墙施工。在测试结果中,测试周期内,累计渗流量稳定在10 Lu以内,单一周期内的渗流量稳定在1.50 Lu以内,能够满足水库除险加固工程的需求。During the construction of the hydraulic engineering concrete cut-off wall,due to the lack of analysis of the objective environmental conditions of the reservoir,the impervious performance of the cut-off wall can not meet the needs of the reservoir reinforcement project.Thus,the construction technology of concrete cut-off wall in the reinforcement of Xiaohulou Reservoir is put forward.According to the standards that the water reducing rate should be controlled more than 25%,the air content should be controlled less than 5.0 within 28 days,and the shrinkage rate of concrete should be controlled less than 110.0%,the specific concrete construction should be prepared.Based on the calculation of the actual hydraulic conditions,the concrete parameters of the bottom width of the concrete cut-off wall are determined.Finally,grouting holes are set on the anti-seepage wall frame to carry out grouting construction and complete the construction of the concrete anti-seepage wall.In the test results,the cumulative seepage flow is stable within 10.0 Lu during the test period,and within 1.5 Lu in a single period,which can meet the needs of reservoir reinforcement projects.

关 键 词：水库除险加固 混凝土防渗墙 混凝土配制 水力情况 防渗墙底宽 灌浆施工 

分 类 号：TN919[电子电信—通信与信息系统]