南京地铁基坑工程地下水控制与渗流分析

Nanjing Subway Foundation Pit Engineering of Groundwater Control and Seepage Analysis

通过对南京市地铁10号线绿博园站基坑工程悬挂式隔渗帷幕抽水试验的研究,结合基坑地质水文条件,基坑所采取的支护结构以及基坑开挖深度,利用试验建立的地下水三维渗流模型进行数值分析,得出地下连续墙的嵌固深度对深基坑涌水量、基坑水位降深的效果。结果表明,在隔渗帷幕内试验,帷幕绕流阻水效果明显。

Based on the study of the suspended seepage curtain water pumping test of the foundation pit of the Nanjing Metro Line 10,the combination of the geological and hydrological conditions of the foundation pit,the supporting structure taken by the foundation pit and the excavation depth of the foundation pit are carried out.The results show that the embedding depth of the underground continuous wall is deepened to the depth of the foundation pit and the water depth of the foundation pit.The results indicate that in the seepage curtain test,curtain wall water blocking effect is obvious.