CAJ | 학술논문

我国东部沿海和长江下游地区，地势低洼，分布广泛有第四系全新统新近沉积的软土，成因类型有滨海相、河漫滩相、湖沼相及间洼地相等软土。该地区软土厚度大、结构松散、高孔隙比，高含水量；其强度低、压缩性大，易产生流动变形。本文以这些不同成因类型的软土为例，针对其矿物成分、粒度成分、物理力学性质及其相关指标之间的关系进行了试验研究和系统分析。研究结果表明软土的成因类型及矿物成分、粒度成分、含水量控制着软土的工程地质性质。
아국동부연해화장강하유지구，지세저와，분포엄범유제사계전신통신근침적적연토，성인류형유빈해상、하만탄상、호소상급간와지상등연토。해지구연토후도대、결구송산、고공극비，고함수량；기강도저、압축성대，역산생류동변형。본문이저사불동성인류형적연토위례，침대기광물성분、립도성분、물리역학성질급기상관지표지간적관계진행료시험연구화계통분석。연구결과표명연토적성인류형급광물성분、립도성분、함수량공제착연토적공정지질성질。
In the coastal areas,especially the lower Yangtze region of East—South China,the soft soils of the Holocene are widely spread.These soft soils are of littoral facies,floodplain facies,lacustrine facies,and intermountain-depression facies,et al.The soft soils in this region,which are of loose structure,high void ratio, and great water content,have poor engineering properties,such as low shear strength,high compressibility and fluidity.These facies soft soil had been taken as examples to study mineral compositions,grain size ranges, physical and mechanical properties of these soft soils and the relations between the indexes of physical and mechanical properties.The results show that engineering behaviors of soft soil are determined by sedimentary facies,mineral composition,grain size ranges and water content.