常州地区土的塑性指数与渗透系数的经验关系研究

摘要

粉土、粘性土的渗透系数受土的结构构造、矿物成分、颗粒级配等因素影响，而这些影响因素可在土性指标(尤其是塑性指数IP)上得到集中体现。基于常州地区土的室内渗透系数K与塑性指数IP试验数据，初步建立了粘性土、粉土渗透系数K与塑性指数IP间的地区经验关系，对常州地区土的渗透系数的确定具有参考意义。%Permeability coefifcient of silt and cohesive soil is affected by structure of soil, mineral composition, grain composition and other factors, which is fully relfected in soil index(especially plasticity index IP). Based on test data of indoor permeability coefficient (K) and plasticity index (IP) in Changzhou, local empirical formula of plasticity index and permeability coefifcient is provided, which has reference signiifcance to the determination of permeability coefifcient.