止水帷幕失效情况下的地下水控制  

Groundwater Control Under Water Stop Curtain Failure

作　　者：姜渭渔 殷立锋 王朝阳 晏姝 王彭宇 罗军涛 赵志银 JIANG Weiyu;YIN Lifeng;WANG Chaoyang;YAN Shu;WANG Pengyu;LUO Juntao;ZHAO Zhiyin(Shanghai Lujiazui Financial and Trade Zone Development Co.,Ltd.,Shanghai 200126,China;Shanghai Changkai Geotechnical Engineering Co.,Ltd.,Shanghai 200093,China)

机构地区：[1]上海陆家嘴金融贸易区开发股份有限公司,上海200126 [2]上海长凯岩土工程有限公司,上海200093

出　　处：《建筑施工》2022年第4期668-671,共4页Building Construction

摘　　要：某项目在发现止水帷幕失效后,在坑外布置应急回灌井,并采用坑内抽水试验及模型计算的方法进行研究。试验及模拟计算结果表明,应急回灌井的使用可以对地下水进行补给,人为抬升地下水水位,减缓周边地表沉降,避免坑外地表过度沉降危及周边环境安全。通过上海某基坑工程的实践,论证了地下水回灌措施在止水帷幕失效中的可行性,且地下水回灌措施在成本和工期上较其他处理措施有一定的优势,性价比高。After the failure of the water stop curtain is found in a project,an emergency reinjection well was arranged outside the pit,and the method of pumping test and model calculation in the pit was used for research.The test and simulation results show that the use of emergency reinjection well can replenish the groundwater,artificially raise the groundwater level,slow down the surrounding surface settlement,and avoid excessive settlement outside the pit and endangering the safety of the surrounding environment.The practice of a foundation pit project in Shanghai demonstrates the feasibility of groundwater reinjection measures in the failure of water stop curtain,and groundwater reinjection measures have certain advantages over other treatment measures in cost and construction period,and have high cost performance.

关 键 词：止水帷幕失效 应急回灌井 沉降 水位 

分 类 号：TU753[建筑科学—建筑技术科学]