摘要
对琼州海峡湛江海域的一种海洋土的基本性质进行了系统的试验研究。该海洋土的物理性质较差 ,按土质分类属于淤泥 ,但其压缩变形特征与强度指标有别于一般性淤泥或淤泥质土 ,表观先期固结压力pc 值为 10 0～ 12 5kPa ,无侧限抗压强度qu 达 5 0kPa左右 ,灵敏度大于 12 ,抗剪强度也相对较高 ,具有一定的结构强度 ,是一种结构性软土。初步从矿物组成、物理化学性质、胶结特性与孔隙结构特征几方面分析了其特殊工程性质的微观机制 。
The fundamental properties of the structural marine soil in Zhanjiang sea area are studied experimentally.The soil has poor properties and belongs to muck according to the soil classification system,but its compressive deformation characteristics and strength parameters are different from that of muck or muck soil.The pre consolidation pressure determined by the Cassagrande method is about 100 125kPa,the corresponding unconfined compressive strength reaches 50kPa and sensitivity is more than 12.Moreover,the shear strength is also relatively high.Therefore,this soil is a kind of extra sensitive clay with certain structural strength.The micro mechanisms of special engineering properties,including mineral composition,physicochemical properties,colloidal behavior are analyzed and their effects on underwater explosion are illustrated.
出处
《水利学报》
EI
CSCD
北大核心
2002年第9期82-88,共7页
Journal of Hydraulic Engineering
基金
国家自然科学基金资助项目 (1990 2 0 18)
关键词
湛江
海域结构
海洋土
淤泥
工程特性
微观结构
marine soil
soil structure
muck
engineering properties
micro structure
