厦门港湾软土的工程地质性质的研究  

Study of engineering geological properties of soft soil in Xiamen Harbour

作　　者：王海鹏[1] 陈峰[1] 

机构地区：[1]国家海洋局第三海洋研究所,厦门361005

出　　处：《台湾海峡》1998年第3期235-243,共9页Journal of Oceanography In Taiwan Strait

摘　　要：厦门港湾除深槽主航道水动力较强地段、基岩出露地段、礁石区及基岩岸段外，表层普遍覆盖了一层对工程不利的厚约1～20m、高含水量、高压缩性、中-高灵敏度的第四纪滨海沉积相的软土。本文探讨了研究区软土的成因和一般工程特征，应用线性回归分析得出天然含水量W对液性指数I、孔隙比e及压缩模量Es的回归方程。并分析了该软土的震动触变性和对桩可能产生负摩阻力问题及防治。There generally covers on the surface of Xiamen Harbour a layer of Quaternary littoralfacies soft soil with high water content, high compressibility and medium to high degree ofsenslbility except the areas such as main deep channels of strong water dynamics, bed rockexposed area, reef rock area and rock coast districts. The layer, roughly 1~20m thick, isharmful to coastal engineering constraction. This paper discusses the causes of formation andgeneral engineering chacteristics of soft soil in the study area, and has constructed threeregression equations of water content versus liquidity index, void ratio and modulus of com--pression using linear regression analysis. It also analyses the engineering geological problemsof the soft soil concerning the vibration thixotropy and the negative friction to pile recom-mends the preventive strategies.

关 键 词：港湾 软土 工程性质 震动触变性 桩 负摩阻力 

分 类 号：P642.133[天文地球—工程地质学] TU473.16[天文地球—地质矿产勘探]