Site soils in southern area of Jiangsu province belong to washland sediment or limnetic facies sediment.The components of sediment are very complex and process of sedimentation is in disorder.
苏南地区场地主要为漫滩相、湖沼相冲湖相新近沉积软,结构松散,沉积零乱,成分复杂,饱水可化粉细砂层及粉层较为发育,在地力荷载的作用下有可能发生软陷砂化。