工程地质学报2016，Vol.24Issue(5)：863-870,8.DOI:10.13544/j.cnki.jeg.2016.05.016
南海北部陆坡表层沉积物强度特征研究
SURFACE SEDIMENT STRENGTH IN BED-SLOPE OF NORTHERN SOUTH CHINA SEA
摘要
Abstract
With the rapid development of marine exploitation activities,the sediment strength in the bed slope of Northern South China Sea has attracted more and more attention.The vane shear tests and penetration tests are conducted on ship with the sediment samples collected by gravity corer and box corer in the Yingqiong Slope, Shenhu Slope,Dongsha Slope and Taiwan Slope.Sampling results show that the sediments in Dongsha Slope are sandy and the carbonate nodules with the diameter of 22cm are found.Besides,living bivalve is found on the seabed and the organic remains are found 1 1 0cm below the seabed in the Shenhu area.The sediment strength results show that the penetration resistance is less than 0.1 N and the vane test strength is no more than 1 0kPa within 20cm below the seabed.Generally,the sediment strength increases with the depth below the seabed. Furthermore,sediment strength stratification is found within 200cm below the seabed,especially in the Taiwan Slope.The sediment strength is low above the interface and increases sharply under the interface.The sediment strength interface is the potential sliding surface.关键词
南海北部陆坡/神狐陆坡/沉积物强度/现场试验/海底滑坡Key words
Slope of Northern South China Sea/Shenhu slope/Sediment strength/Field test/Submarine landslide分类
天文与地球科学引用本文复制引用
朱超祁,贾永刚,张民生,王振豪,沈泽中,张博文,单红仙..南海北部陆坡表层沉积物强度特征研究[J].工程地质学报,2016,24(5):863-870,8.基金项目
国家自然科学基金（41427803，41502265），青岛海洋科学与技术国家实验室鳌山科技创新计划项目（2015ASKJ03）资助． （）
