摘要
以西南地区某双向挡水重力坝右岸灌排洞涌水综合处理为例,采取先短期造孔集中引排、打斜孔灌注水泥浆堵水,后长期洞内钢筋混凝土衬砌后系统固结灌浆,洞内设置搭接帷幕与洞上部设防渗帷幕形成封闭阻水帷幕的综合处理方案。在缩短综合处理的工期、实现快治理的前提下,对短期堵水的引排、灌浆堵水工艺、快速衬砌混凝土所涉及的各类灌浆分别制定了快速处理措施,分析了综合处理技术、质量控制的关键控制点。结合施工成果和质量检查成果分析判断,施工质量满足设计和规范要求。此外,总结了快速处置值得借鉴的经验,可供同类工程参考。
This paper presents a case history of rapid treatment of groundwater gushing in an irrigation tunneling excavation at the right shoulder of a double-way gravity dam in Southwest China.The treatment measures included diverting groundwater through concentrated boreholes drilled in a very short period and drilling inclined borehole for the cement slurry grout.After the short-term treatment,the long-term treatment measure was to grout the rock mass after the installation of the reinforced concrete liner.The grouting curtain in the long-term treatment was over lapsed with the slurry wall above the tunnel so that the irrigation tunnel was surrounded by the grouted curtain.This treatment can provide a short response time and rapid treatment of the groundwater gushing hazards.This method can also provide experience for the rapid groundwater diverting,grouting procedure and rapid tunnel liner installations.The testing on the grouted area indicated that the treatment method was successful.
作者
张家托
赖琳
ZHANG Jiatuo;LAI Lin(Sichuan Ertan International Engineering Consulting Co.Ltd.,Chengdu,611130;Directional Welling Drilling Service Co.,Chuanqing Drilling and Extraction Research Institute,China Petroleum Group Co.,Guanghan 618300)
出处
《土工基础》
2019年第6期655-659,共5页
Soil Engineering and Foundation
关键词
涌水
快速处理
衬砌
灌浆
施工技术
重力坝
Gushing Water
Rapid Treatment
Lining Concrete
Grouting
Construction Technology
Gravity Dam
