›› 2016, Vol. 30 ›› Issue (3): 311-315.

• 工程实录 • 上一篇    下一篇

地铁基坑在复杂地质条件下的降水方案研究

胡焕驰   

  1. (广州地铁设计研究院有限公司,广州 51000)
  • 收稿日期:2016-01-15 修回日期:2016-01-20 出版日期:2016-06-20 发布日期:2016-06-21
  • 作者简介:胡焕驰(1990-),男,助理工程师,研究方向为地铁结构。

Dewatering of Metro Excavation under Complicated Subsurface Conditions

HU Huanchi   

  1. (Guangzhou Metro Design & Research Institute Co., Ltd.,Guangzhou 51000)
  • Received:2016-01-15 Revised:2016-01-20 Online:2016-06-20 Published:2016-06-21

摘要: 苏州某地铁站为地下两层双岛四线平行换乘车站,车站南北两端分别接两段明挖区间,线路总长763.2m。由于车站长度范围广,纵向上地层分布呈现出差异性,承压水层的分布及埋深也不同,导致三个基坑在对承压水问题处理上的不同。综合基坑深度、周边环境及承压水层的不同分布,在保证基坑及周边环境安全的条件下,分别采用了地下连续墙完全隔断承压水层及降低承压水水头高度的方案。

关键词: 地铁基坑, 承压水, 降水, 止水帷幕

Abstract: An underground metro transfer station of Suzhou Rail Transit has two islands and four parallel lines. The total length of this station is 763.2 meters and it connects in the north and south side to both openexcavation metro lines. Due to the length this station, variations in soil strata with significant properties are observed. The treatment of artesian groundwater in three deep excavations at the station are different. Based on the different excavation depths, adjacent environment and the distribution of the artesian layers, diaphragm wall was used as the cutoff the artesian water supply and to reduce the water head.

Key words: Metro Excavation, Artesian Water, Dewatering, Cutoff Wall