Research on Construction Technology of Deep Foundation Pit of Hydraulic Structure under Marine Silt Soil

This article takes the second phase of the second water plant and supporting pipeline network in Xuwei New district, Lianyungang city as an example. Through the analysis of engineering geology, hydrological conditions, support design and construction, etc.,Finally, the foundation pit adopts a relatively economical, safe, and time-saving Larsen steel sheet pile and steel support enclosure system, which has achieved a good support eff ect.It provides technical reference for the support construction of deep foundation pits similar to coastal soils in the future.