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.
苏南土主要为漫滩相、湖沼相或冲湖相新近沉积软弱土,结构松散,沉积零乱,成分复杂,饱水可
粉细砂层及粉土层较为发育,在
震或动力荷载的作用下有可能发生软土震陷或砂土
。