土钉墙+井点降水在沿海地区砂土层基坑支护中的应用

Application of soil nailing wall and well-point dewatering in the sand soil foundation pit support of coastal area

在某沿海地区,其主要为饱和粉质黏土、粉砂等水位较高的软土层,其本身稳定性差,易产生流砂和管涌的可能,光是单一的土钉墙不能满足基坑围护安全性。主要介绍土钉墙+井点降水在沿海地区砂土层基坑支护中的成功应用,此土钉墙+井点降水支护方法造价较低且施工期较短,值得在相似深基坑支护中推广应用。

The coastal area has saturated silty clay and silty sand which have poor stability and easily cause flowing sand and piping. Single soil nailing wall cannot meet foundation pit safety. The article introduces successful application of soil nailing wall and well- point dewatering in the sand soil foundation pit support of coastal area. The method of soil nailing wall and well-point dewatering support has low cost and short construction period and is worth for application in similar deep foundation pit.