摘要
升钟水库大坝基础为软弱的砂页岩层，层理发育，基岩软弱带和风化破碎带分布面积较广，岸边卸荷裂隙密集，渗透系数大的不良地基。在不设廊道的情况下，采用低压厚幕的灌浆处理方案。灌浆施工程序和技术工艺严格。从灌浆成果资料和大坝观测成果资料分析，灌浆处理的效果是好的，帷幕的防渗能力是稳定的。为高坝基础低压帷幕灌浆提供了有益的经验。
The Shengzhong reservoir dam foundation is interbeded weak sand and shale with bedding devloped,wide distribution of weak zone and fracture zone in bed rock,dense relaxed crack at bank and high percolation coefficient. Without gallery.low pressure,thick curtain grouting is adopted with strict grouting procedures and technical process. Analysis for groution effect and dam observation results show that grouting effect and imperviousness of curtain are satisfactory. The experiencesfrom the project give references to placement of low pressure grouting curtain in foundation under high dams for other projects.
出处
《四川水力发电》
1997年第4期12-18,共7页
Sichuan Hydropower
关键词
水库
大坝
不良地基
灌浆处理
灌浆帷幕
Shengzhong reservoir,dam, unfavourable foundation,grouting treatment
