厦门地铁一号线天水路站基坑降水技术研究

地铁基坑降水方案设计已成为地铁建设的关键性技术性问题之一,降水工程的成功与否,已成为影响工程进度及成败的重要因素。以厦门市轨道交通一号线天水路站基坑降水工程实例,考虑到该工程中特殊的土岩复合地层地质条件,采用坑内管井降水,并通过规范计算涌水量,得到了管井孔径及布置方法,且对降水过程可能出现实施困难的原因及防治措施进行了论证分析,可为类似工程的施工提供参考。

Study on Dewatering Technology for Foundation Pit at Tianshui Station of Xiamen Metro Line 1

Dewatering design for metro foundation pit is one of the key technical issues in metro construction, which may affect the project progress and success. Taking the dewatering engineering in the foundation pit at Tianshui Station of Xiamen Metro Line 1 as an example, this paper, with the consideration of the complex geological condition of soil-rock compound strata on the site, applied tube well dewatering in the pit and, according to the water inflow calculated from the standard, obtained the well aperture and arrangement; in addition, the reason of the troubles that may arise out of the dewatering and the control measures were discussed. It may provide references for similar project construction.