| 南海北部大陆架海底沉积物物理性质研究 |
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| 引用本文： | 卢博,李赶先,黄韶健,李传荣.南海北部大陆架海底沉积物物理性质研究[J].海洋工程,2004,22(3):48-55. |
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| 作者姓名： | 卢博 李赶先 黄韶健 李传荣 |
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| 作者单位： | 1. 中国科学院南海海洋研究所与广州地球化学研究所,边缘海地质重点实验室,广东,广州,510301
2. 中国科学院南海海洋研究所,海洋环境工程中心,广东,广州,510301 |
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| 基金项目： | 国家自然科学基金资助项目(40176012) |
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| 摘 要： | 用物理(声学的、工程地质的、扫描电子显微镜)等技术方法，综合分析了沉积物结构特征和工程力学性质，研究了颗粒接触、堆垒、孔隙等现象与物理性质之间的关系，得出了沉积物声学物理参数和应力一应变性质之间的关系。结果表明，南海北部大陆架海底沉积物有6种结构类型，其中混合接触结构类型的沉积物具有较高的抗压强度和声速，浅层海底存在着高、低声速分层的中尺度结构。
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| 关 键 词： | 南海北部大陆架 海底沉积物 结构特征 工程地质 声学物理 |
| 文章编号： | 1005-9865(2004)03-0048-08 |
| 修稿时间： | 2003年6月17日 |
A study on physical properties of sediments on continental shelf seabed of the northern South China Sea |
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| LU Bo,LI Gan-xian,HUANG Shao-jian,LI Chuan-rong.A study on physical properties of sediments on continental shelf seabed of the northern South China Sea[J].Ocean Engineering,2004,22(3):48-55. |
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| Authors: | LU Bo LI Gan-xian HUANG Shao-jian LI Chuan-rong |
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| Institution: | LU Bo~1,LI Gan-xian~1,HUANG Shao-jian~2,LI Chuan-rong~2 |
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| Abstract: | By using some physical methods (acoustical, geotechnical and electron microscopic), the authors have analysed the structural characteristics and mechanic propeties of sediment, the micro-structure and classification characteristics of sediment particles, and on the basis of physical-mechanical characteristic parameters, the relation among grain contact, grain accumulation, porosity and physical-mechanical characteristics of sediment, and obtained the sound physical properties and the stress-strain relationship of sediment. The study result shows that there are 6 structural types in the sediments on the shelf seabed of the northern South China Sea, and that the mixed contact structural sediment has a higher compressive strength and higher sound velocity than the others. Seabed surface sediment has the meso-scale structure with a high sound velocity layer and a low sound velocity layer. |
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| Keywords: | northern shelf of the South China Sea seabed sediment structural characteristics soil mechanics sound physical properties |
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