摘要
深基坑降水方案设计的合理性是决定地铁施工成功的关键性因素,采用数值模拟进行计算分析是一种行之有效的方法。以上海地铁14号某地铁站深基坑降水工程为例,根据模拟区的工程地质和水文地质条件等,采用Visual Modflow有限差分法建立了三维地下水渗流模型对深基坑降水进行数值模拟,确定深基坑降水方案,此外,还探讨了深基坑降水对周边环境地面沉降的影响,进一步验证了方案设计的准确性。
The rationality of deep foundation pit dewatering scheme is the key factor that determines the success of subway construction,we usually use the numerical simulation to calculate and analyze the design.Visual Modflow finite difference method was used to establish a 3D groundwater flow model for numerical simulation of deep foundation pit dewatering of Shanghai Metro Line No.14,based on the engineering geology and hydrogeology conditions of the simulation area.On the basis of simulation results,the deep foundation dewatering scheme was defined.In addition,the impact of deep foundation pit dewatering on ground subsidence was also explored,further verifying the accuracy of the design.
作者
李伟
张英英
张洋
李侠
沈驰
Li Wei;Zhang Yingying;Zhang Yang;Li Xia;Shen Chi(The 2nd Geological Brigade of Jiangsu Geology&Mineral Exploration Bureau,Changzhou 213002,China;Shanghai Guanglian Geotechnical&Environmental Co.,Ltd,Shanghai 201900,China;Changzhou Surveying&Mapping Institute,Changzhou 213003,China)
出处
《城市勘测》
2019年第1期189-192,共4页
Urban Geotechnical Investigation & Surveying
关键词
地铁
深基坑降水
三维数值模拟
地面沉降
subway
deep foundation pit dewatering
3D numerical simulation
ground subsidence
