七里坡水库砌石拱坝裂缝渗漏原因分析及处理  

Analysis of causes and treatment for crack leakage at masonry arch dam of Qilipo Reservoir

作　　者：史天波 谭剑波[2] SHI Tian-bo;TAN Jian-bo(Guizhou Zhongshui Engineering Supervision Co., Ltd., Guiyang 550002, China;Northwest Agriculture and Forestry University, Yangling 712100, China)

机构地区：[1]贵州中水建设管理股份有限公司,贵阳550002 [2]西北农林科技大学,陕西杨凌712100

出　　处：《广西水利水电》2017年第4期90-92,95,共4页Guangxi Water Resources & Hydropower Engineering

基　　金：国家科技支撑计划项目(2015SXC21P35);中央高校基本科研业务费专项资金(37809506)

摘　　要：为消除七里坡水库大坝由于砌石密实度低、未设置防渗面板等,导致高水位蓄水运行条件下坝体下游面及坝肩存在渗漏问题。经实地踏勘和钻芯取样,对大坝渗漏原因进行了全面调查分析。结合坝体应力和拱座整体稳定性复核成果,采取上游坝面增设混凝土面板与坝基坝肩增补帷幕灌浆为主的组合防渗方案进行防渗处理。大坝整治后,历经高水位和汛期大流量考验,各项指标运行正常,坝体和坝肩渗漏问题处理成功。The downstream surface and abutment of main dam at Qilipo Reservoir had seen leakage at high storage level due to low masonry density and no seepage control face slab being designed.Based on field survey and core drill sampling,the authors analyze the causes for leakage.Combined with the review results of dam body stress and arch abutment overall stability,the adopted composite treatment scheme consists of additional concrete face slab at the upstream dam surface and curtain grouting at dam foundation and abutment.The main dam has withstood high water level and flow during flood season after the reinforcement,with all indexes within normal range.

关 键 词：浆砌石拱坝 安全复核 拱梁分载法 帷幕灌浆 

分 类 号：TV543[水利工程—水利水电工程] TV641.31