摘要
以长沙地铁5号线朝阳站为工程背景,对车站工程地质和水文条件,采用理论分析、数值模拟等方法对富水砂卵地层条件下基坑动态降水控制技术进行研究。通过确定降水方法,明确降水过程中地下水位动态水文变化过程排水量的计算公式;得到3个降水阶段基坑降水进入稳定的时间、地表沉降达到稳定需要的时间以及最后的沉降值。
The Chaoyang station in the 5th line of Changsha subway is taken as engineering background. Considering the station engineering geological and hydrological conditions, the dynamic dewatering control technologies for the water-rich sandy gravel layer of foundation ditch were studied by using theory analysis, field test and numerical simulation methods. The drawdown method was determined, the formula for calculating the displacement of groundwater level considering drawdown process was definited, and the stability time of foundation ditch at three drawdown stages of foundation, the time to reach steady and the final settlement value for surface subsidence were obtained.
作者
娄平
赵星
汤卓
倪志国
唐治
陈杰欣
李卓
徐庆元
LOU Ping;ZHAO Xing;TANG Zhuo;NI Zhiguo;TANG Zhi;CHEN Jiexin;LI Zhuo;XU Qingyuan(School of Civil Engineering, Central South University, Changsha 410075, China;Civil Engineering Co., Ltd., China Construction Five Bureau, Changsha 410004, China)
出处
《铁道科学与工程学报》
CAS
CSCD
北大核心
2019年第2期457-463,共7页
Journal of Railway Science and Engineering
基金
中国建筑第五工程局有限公司科技资助项目(2017tm002)
中南大学研究生自主探索创新资助项目(2017zzts760)
关键词
富水砂卵地层
基坑降水
数值模拟
动态控制
water-rich sandy gravel layer
foundation ditch dewatering
numerical simulation
dynamic control
