The difference analysis of physical-mechanical properties of sediments in the central South Yellow Sea and Zhe-Min coastal area in China

XU Yuanqin; LI Ping; LI Peiying; DU Jun; LIU Lejun; GAO Wei; LIU Jie

doi:10.1007/s13131-017-1000-8

浙闽近岸与南黄海中部沉积物物理力学性质的差异性分析

doi: 10.1007/s13131-017-1000-8

1.
海洋沉积与环境地质国家海洋局重点实验室, 国家海洋局第一海洋研究所, 青岛 266061;青岛国家海洋科学技术实验室, 海洋地质过程与环境功能实验室, 青岛 266061
2.
青岛国家海洋科学技术实验室, 海洋地质过程与环境功能实验室, 青岛 266061;海岛海岸带研究中心, 国家海洋局第一海洋研究所, 青岛 266061
3.
青岛国家海洋科学技术实验室, 海洋地质过程与环境功能实验室, 青岛 266061;海洋工程环境与测绘研究中心, 国家海洋局第一海洋研究所, 青岛 266061

基金项目: The NSFC-Shandong Joint Fund for Marine Science Research Centers under contract No. U150640007; the Natural Science Foundation of Shandong Province of China under contract No. BS2015HZ009; the National Natural Science Foundation of China under contract No. 41506071.

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- 收稿日期: 2016-05-31
- 修回日期: 2016-10-08

The difference analysis of physical-mechanical properties of sediments in the central South Yellow Sea and Zhe-Min coastal area in China

1.
Key Laboratory of Marine Sedimentology and Environmental Geology, The First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China;Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266061, China
2.
Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266061, China;Research Center for Islands and Coastal Zones, The First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
3.
Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266061, China;Marine Engineering Environment and Geomatic Center, The First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China

摘要

摘要: 本文对浙闽近岸和南黄海中部泥质区沉积物的物理力学性质，分别从基本物理性质、水理性质及力学性质进行对比分析，发现两个区域沉积物均以淤泥为主，含水率与密度、压缩系数与压缩模量均呈良好的幂函数负相关性，液限与塑限呈良好的幂函数正相关性，含水率与孔隙比呈较好的线性正相关，十字板剪切强度与微型贯入阻力呈较好的多项式函数关系。总体来说，南黄海中部泥质区沉积物相对于浙闽近岸泥质区沉积物具有含水率高、孔隙比大、密度小、塑性高，压缩性大，抗剪强度低等特征。
从地形特征、物质来源、水动力条件、沉积速率和物质组成等方面进行两个区域沉积物物理力学性质差异性的成因分析。结果显示，与浙闽近岸相比，南黄海中部离陆较远、地势低洼、水动力条件较弱，能够扩散至此的物质较少并以极细的粘粒物质为主，沉积物中的蒙脱石和有机质含量高。这些因素使得南黄海中部沉积物的含水率高，塑性大，密度低，强度低。
- 沉积物 /
- 浙闽近岸 /
- 南黄海中部 /
- 物理力学性质 /
- 差异性分析
Abstract: 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.
- sediment /
- Zhe-Min coastal area /
- central South Yellow Sea /
- physical-mechanical properties /
- difference analysis

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浙闽近岸与南黄海中部沉积物物理力学性质的差异性分析

doi: 10.1007/s13131-017-1000-8

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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

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