江苏省太仓市的软土分布及力学特征

Distribution and Mechanical Characteristics of Soft Soil in Taicang City, Jiangsu Province

摘要: 江苏省太仓市地处江苏省东南部与上海交界处，在地质上处于长江三角洲南翼的边缘地带，区内软土分布，但详细的研究资料较少。本文搜集了太仓地区的地勘资料，统计了软土地层的分布规律(包括地层层序、埋深、厚度等)，软粘土的物理力学性质(包括孔隙比、含水率、塑性指数、静力触探锥尖阻力、超固结比OCR等)。发现了太仓地区土层地质成因和分布较为复杂，大致可以分为两大类；软土土层多数为低塑性的粉质粘土，塑性较低；该地区在进行勘察时土层编号没有相应规范或标准层序，较为混乱，关于该地区软土地质历史以及土层编号的统一还需要进一步研究。

Abstract: Soft soil is widely distributed in Taicang City of Jiangsu Province, located at the junction of southeast Jiangsu Province and Shanghai and geologically located at the edge of the south wing of the Yangtze River Delta. However, there is few detailed research on the characteristics on the soft clay in this region. This paper collects the geological exploration data in Taicang, studies on the distribution of soft soils (including stratum sequence, buried depth and thickness), and the physical and mechanical properties of soft clays (including void ratio, water content, plasticity index, cone tip resistance of CPT, overconsolidation ratio OCR, etc.). The geological formation and distribution of the soft clays are very complex and the distributions of the soft clays can be approximately divided into two modes. Most of the soft soils in Taicang belong to silty clay with low plasticity. Further research is needed on the research of the geological history and unification of layer number of the soft clays in this area.