在河口和沿海一带,常有松软的幼年冲积层。在这里搞建设,特别需要进行软基处理。对于荷载大的小型建筑物,固然可采用各种桩基结构,然而对规模较大的设施,如港口堆场、工业区、冶炼厂、油库和船厂, In the mouth of the estuary and along the coast, often soft juvenile alluvial. Building construction here, in particular, need to be soft foundation. For small structures with large loads, although various types of pile structures can be used, for large-scale facilities such as port yard, industrial area, smelter, oil depot and shipyard,