某大型盛水构筑物基坑降水问题的分析与处理

Analysis and Treatment of the Foundation Excavation Dewatering Problem of a Structure Containing Water

盛水构筑物由于自身的特点,对于施工过程中的地下水水位变化较为敏感,降水不到位容易引起盛水构筑物上浮。结合某净水厂大型盛水构筑物在基坑降水过程中出现的问题,通过对现场实际情况的勘察与分析,根据场地各土层渗透系数调整基坑降水方式。工程实践表明,该工程所采用的轻型井点方式降水取得良好的工程与经济效果。

The structure containing water is sensitive to the groundwater level variation in the construction. It is easy to float upward when the foundation excavation dewatering is not in place. Combined with the problem in the process of a big pool foundation excavation dewatering,adjust the way of foundation excavation dewatering according to permeability coefficient by investigating and analyzing the site actual condition. The project practice result shows that the light well point used in this project obtains a good engineering and economic effect.