地铁基坑地下连续墙渗漏原因分析及治理措施  

STUDY ON CAUSES AND COUNTER MEASURES FOR SEEPAGE ACCIDENTS OF DIAPHRAGM WALLS IN SUBWAY EXCAVATIONS

作　　者：侯新宇[1] 刘娟[1] 薛必芳[1] 火映霞[1] 

机构地区：[1]江苏开放大学建筑工程学院,南京210036

出　　处：《建筑技术》2017年第9期972-975,共4页Architecture Technology

基　　金：江苏省高校自然科学研究项目(14kJB560004);江苏省"六大人才高峰"项目(2014JZ010);江苏省"青蓝工程"优秀青年骨干教授(2014010)

摘　　要：通过统计研究苏州地铁11座车站372幅地下连续墙的渗漏情况,分析导致地下连续墙渗漏的影响因素包括:场地工程地质、支护结构施工质量、施工现场复杂环境等,处理渗漏事故须遵循"疏导为主,疏导、封堵、加固相结合"的原则,针对不同情况,可采用坑后注浆封堵、降压井降低承压水水压、减少周围环境荷载对基坑的影响、改进工艺等措施。The datum of seepage accidents of 372 diaphragm walls in 11 subway stations on the diaphragm walls had been investigated and analyzed by statistical method, the influences factors that the seepage accidents occurred on diaphragm walls had been analyzed systematically： engineering geology and hydrogeology condition, construction quality effect of supporting wall, complicated environment factors at construction field, and so on. The principle including of primary persuasion, combination of the persuasion, plugging and reinforcement must be abided when facing the seepage accidents, therefore, the different preventing and handling measures had been given according to different seepage condition, such as slip casting behind the diaphragm wall, reducing the hydraulic pressure of confined water through the dewatering well, reducing the environment load influence on the excavation, improving the construction technology and promoting the quality.

关 键 词：地铁基坑 地下连续墙 渗漏事故 治理措施 

分 类 号：TU476.3[建筑科学—结构工程]