旋流井地下连续墙支护及井壁逆作法施工技术

针对沿渤海、黄骅港地区地质条件,场地地层较差,上部为素填土,以黏性土为主,其下在施工范围内依次为粉质黏土、黏土局部夹粉土层,地下水较多的情况,设计使用地下连续墙在旋流井基坑外侧作支护,另外主体结构采用逆作法施工,这样使外侧连续墙与逆作井壁共同作为基坑支护系统,不但安全可靠,而且施工较快。

DIAPHRAGM WALL SUPPORT OF SPIRAL WELL AND TOPDOWN CONSTRUCTION TECHNOLOGY OF WELL WALL

Aimed at geological conditions of Bohai and Huanghuagang area that stratum is undesirable,the upper part is plain filling soil consisted of mainly clayed soil,the lower part with respect to construction scope is silt clay,part of which has clip silt soil and there is plenty of underground water,it is hereby designed that a diaphragm wall serves as support at the outside of spiral well foundation pit,and that topdown construction technology is adopted for the main structure;therefore,outside diaphragm wall a...