Taking the overbank soft soil near Naniing Hexi south lake,Saihong bridge as a representative,this paper discussed the sedimentary characteristics,material composition,particle size composition,physical and mechanical properties and engineering geological characteristics of Naniing west overbank soft soil,finally introduced the reasonable selection principle of soft soil area types and ground foundation,provided rele-vant measures and suggestions for engineering construction.%以南京市河西南湖、赛虹桥一带的漫滩软土为代表，讨论了南京市城西漫滩软土的沉积特征、物质成分、粒度成分、物理力学性质及工程地质特性，最后介绍了软土地区地基与基础类型的合理选择原则，为工程建设提供了相关处理措施与建议。
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