第29卷第4期 2017年8月
浙江水利水电学院学报
J. Zhejiang Univ of Wat. Res & Electric Pow.
D0I: 10.3969/j. issn. 2095-7092.2017.04.007
土坝除险加固安全复核及套井回填粘土
防渗技术应用史天波”，陈文斌”
Vol.29No.4 Aug.2017
(1.贵州中水建设管理股份有限公司，贵州贵阳550002;2.西北农林科技大学水利与建筑工程学院，陕西杨凌712100）
摘要：团结水库大坝设计标准低、施工质量差和运行维护落实不到位等，在高水位蓄水运行中，存在坝顶高程不满足防洪标准、坝体渗漏和坝基坝肩接触段渗漏等问题，且呈加剧趋势.为消除水库安全隐惠，经实地踏勘和钻芯取样，结合大坝安全复核结果，优选坝顶培厚增高与套井回填粘土防渗相结合的除险加固修复方案.防渗加固处理
后，大坝防洪标准、坝体渗流和抗滑稳定性等特性指标均满足规范要求，大坝渗漏问题得到有效控制。关键词：坝体渗漏：套并回填：渗透比降：防渗加固
中图分类号：TV641.2
文献标志码：A
文章编号：1008536X(2017)04-0036-05
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ControlTechnologyforEarth-fillDamReinforcement
SHI Tian-bo', CHEN Wen-bin?
(1. Guizhou Zhongshui Construction Management Co - , Lid. , Guiyang 550002, China ; 2. College of Water Resource and
Architecture Engineering , Northwest Agriculture and Forestry University , Yangling 712100, China)
Abstract : The problems of the crest elevation cannot meet the flood control standard , and the leakage exists both in the dam body and the contact belt at dam foundation and abutment and in increasing trend in the dam of Tuanjie Reservoir , which were caused by low design standard , poor construction quality , unplaced operation and poor maintenance measures and oth -er reasons. In order to eliminate the leakage problems of the reservoir , combined with the dam safety review results , the field surveying and drill core sampling are conducted , the anti-seepage reinforcement scheme with increasing crest 's height and thickness as well as casing well hackfill clay anti -seepage has been adopted. After dam reinforcement treatments , the flood control standards , dam seepage characteristics and anti -sliding stability and other indicators can meet the regulatory requirements, and the dam leakage problems have been successfully processed .
Key words : dam leakage ; casing well backfill ; seepage gradient ; anti-seepage and reinforcement
土坝具有就地取材节省“三材”、结构简单便于加高扩建、施工技术工序少便于组合机械快速施工、坝身变形适应性强对地基要求低等优点，在水利水电工程中得到广泛推广与应用.土坝作为地形、地质条件适应性和经济性均较优越的主流坝
收稿日期：2017-02-27
基金项目：国家科技支撑计划项目（2015SXC21P35）：中央高校基本科研业务费专项基金（37809506）
作者简介：史天波（1967－），男，贵州贵阳人，高级工程师，主要从事水利水电与管理工作
型，在深厚覆盖层、较差地基条件、宽阔河谷等流域中，起到较好的应用成果和研究进展，尤其在结构造型、技术指标、施工工艺等方面出现较多创新和突破门，但由于当时历史背景的制约，许多大坝属于典型“群众运动、土法上马”工程，在几十年运行中，工程老化、退化严重，坝体渗漏、接触带渗漏甚至坝坡崩塌失稳等，直接影响到大坝安全稳定运行2]，本文结合大坝除险加固安全复核成果，采取合理防渗修复工程措施，以便安全可靠、节能经济地解决工程隐患，