沉井注水下沉施工

The Construction of Water Injection Sinking Caisson

沉井注水下沉适用于地质条件复杂,有地下水,降水施工可能引起沉井周边建(构)筑物地基基础和道路的不均匀沉陷,从而导致建(构)筑物上部主体的倾斜的沉井、深基坑支护等工程。通过对沉井注水下沉法的研究,能够较好的解决流砂地区沉井下沉的稳定,保证沉井自身的顺利进行且对周边建、构筑物不产生影响,从而大大节省费用,节约工期。本文重点介绍了沉井注水下沉的工艺原理、工艺流程、施工方法。

The water injection open caisson sinking is applied to the project of the open caisson and Deep Foundation Pit Bracing, with complex geological conditions such as there is underground water, precipitation construction may cause uneven subsidence of the building （struc- ture） and the road around caisson, resulting in upper body of the building （structure） inclining. By study, the water injection open caisson sink- ing method can be used to maintain stability of open caisson sinking in flow sand region, to ensure the open caisson itself sinking smoothly and al- so no influence on surrounding building and structures. Thereby, costs are greatly reduced and construction period is shortened. This paper mainly introduces process principle, technological process, and construction method of the water sinking caisson.