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The difference analysis of physical-mechanical properties of sediments in the central south yellow sea and zhe-min coastal area in China

引用

Acta Oceanologica Sinica 2017年第7期36卷 77-85页

作者： XU Yuanqin LI Ping LI Peiying DU Jun LIU Lejun GAO Wei LIU Jie Key Laboratory of Marine sedimentology and Environmental Geology The First Institute of OceanographyState Oceanic AdministrationQingdao 266061China Laboratory for Marine Geology Qingdao National Laboratory for Marine Science and TechnologyQingdao 266061China Research Center for Islands and coastal Zones The First Institute of OceanographyState Oceanic AdministrationQingdao 266061China Marine Engineering Environment and Geomatic Center The First Institute of OceanographyState Oceanic AdministrationQingdao 266061China

The difference analysis of physical-mechanical properties of muddy sediments is made in the central south yellow sea and the zhe-min（zhejiang Province to Fujian Province of China） coastal area. The results show that sediments in the two regions are both dominated by mud. There are perfect negative power function correlations between the water content and the density, the compression coefficient and the compression modulus; a good positive power function correlation between the liquid limit and the plastic limit, a perfect positive linear correlation between the water content and the void ratio, and a perfect polynomial function correlation between the miniature vane shear strength and the pocket penetration resistance. In general, compared with sediments in the zhe-min coastal area, sediments in the central south yellow sea possess high water content, high void ratio,low density, high plasticity, high compressibility, low shear strength. The causes of the differences between physical-mechanical properties of sediments are analyzed from the topographic features, material sources,hydrodynamic conditions, deposition rate, and material composition. Compared with the zhe-min coastal area,the central south yellow sea is far from the Mainland and low-lying; has poor hydrodynamic condition; the materials diffused to the area are less and dominated by fine clay, have the high content of smectite and organic matters. These factors lead to sediments of the central south yellow sea has the higher water content, the higher plasticity, the lower density, and the lower strength than sediments in the zhe-min coastal area.

关键词： sediment zhe-min coastal area central south yellow sea physical-mechanical properties difference analysis

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