中国地质灾害与防治学报2026，Vol.37Issue(3)：181-192,12.DOI:10.16031/j.cghc.202507025
昆明冲洪积软塑性黏土物理力学特性试验研究
Experimental study on physical and mechanical properties of alluvial-pluvial soft plastic clay in Kunming
摘要
Abstract
To supplement the engineering property data of undisturbed soft plastic clay in Kunming,this study systematically measures its physical and mechanical parameters via laboratory tests to reveal the evolution laws of physical properties,consolidation deformation,shear strength,and permeability.A series of laboratory tests were performed on undisturbed soft plastic clay samples collected from the foundation pit excavation of the northwest new city digital economy industrial park project in Wuhua district,Kunming.The basic physical properties,consolidation-deformation characteristics,shear strength,and permeability of the soft-plastic soil were analyzed.The results indicate that the soft plastic clay is characterized by high natural water content,high compressibility,and low shear strength,indicating unfavorable engineering properties.The consolidation coefficient reaches its peak at approximately 100 kPa,presenting an obvious stress-dependent feature.The permeability coefficient is at a medium-low level and decreases with the increase of consolidation stress and the decrease of void ratio.The parameters obtained can provide data support for engineering analysis of similar soils.The nonlinear variation of the consolidation coefficient and the correlation mechanism between permeability coefficient,stress,and void ratio provide a theoretical basis and parametric reference for solving problems such as"large excavation rebound and difficult-to-control support deformation"in soft soil foundation and foundation pit engineering in the Dianchi Lake basin.关键词
软塑土/固结/抗剪强度/渗透系数/工程应用Key words
soft plastic soil/consolidation/shear strength/permeability coefficient/engineering application分类
天文与地球科学引用本文复制引用
郭延辉,潘泽文,赵海刚,江迪,马秉庆..昆明冲洪积软塑性黏土物理力学特性试验研究[J].中国地质灾害与防治学报,2026,37(3):181-192,12.基金项目
云南省基础研究计划重点项目(202501AS070107) （202501AS070107）
云南省基础研究计划面上项目(202301AT070454) （202301AT070454）
云南省兴滇英才支持计划青年人才专项项目(KKXX202467043) （KKXX202467043）
昆明理工大学省级人才培养基金项目(KKZ3202367014) （KKZ3202367014）
