| 大洋多金属结核矿区表层沉积物的物理性质 |
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| 引用本文： | 陈小玲.大洋多金属结核矿区表层沉积物的物理性质[J].海洋学研究,2004,22(1):28-33. |
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| 作者姓名： | 陈小玲 |
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| 作者单位： | 浙江大学,建筑工程学院,浙江,杭州,310027;国家海洋局,第二海洋研究所,浙江,杭州,310012 |
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| 基金项目： | 中国大洋矿产资源研究开发协会资助项目 |
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| 摘 要： | 利用大洋多金属结核矿区调查过程中4个航次所得的600多组表层沉积物物性测试资料,将矿区的沉积物分为5种类型,并分析了这些沉积物的物理性质,同时,运用回归分析方法,统计分析了不同类型沉积物的含水量、湿密度、孔隙比与埋藏深度的关系,以及各物性指标之间的相关关系。结果表明:(1)大洋多金属结核矿区表层沉积物均为粉质土,黄棕色粉质土是西部矿区的主要沉积物类型,棕黄色粉质土是东部矿区的主要沉积物类型;(2)除褐色粉质土外,其余4种类型土的含水量、孔隙比均随埋藏深度的增加而减少和降低,湿密度则随深度增加而增大;(3)各类土的物性指标与埋藏深度的相关性甚好,因而可以利用埋藏深度对矿区的沉积物进行物性指标预测;(4)含水量、孔隙比、湿密度等物性指标之间呈线性相关,其中含水量与孔隙比的相关性最为密切,呈明显线性关系。
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| 关 键 词： | 大洋多金属结核矿区 表层沉积物 物理性质 |
| 文章编号： | 1001-909X(2004)01-0028-06 |
| 修稿时间： | 2003年6月24日 |
The physical properties of surface sediments in oceanic polymetallic nodule |
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| CHEN Xiao-ling.The physical properties of surface sediments in oceanic polymetallic nodule[J].Journal of Marine Sciences,2004,22(1):28-33. |
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| Authors: | CHEN Xiao-ling |
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| Institution: | CHEN Xiao-ling~ |
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| Abstract: | On the basis of the six hundreds groups of geotechnical data obtained from four investigations of marine polymetallic nodules, the paper classified the surface sediments of oceanic polymetallic nodule diggings as five types and analyzed their physical properties. Simultaneously, the paper statistically analyzed correlativity between physical properties and ebedding depth. The results are as follow:(1)the surface sediments are silt, the main sediment is the olive brown silt in west diggings and brown yellow silt in the east diggings. (2)for all types of silt except brown silt, the water content and void ratio decrease with inceasing embedding depth deeper, but conversely for wet density. (3)the correlativity between physical properties and embedding depth are good to provide a foundation for forecasting the physical properties from the embedding depty of sediment. (4)the physical properties such as water content, void ratio and wet density are linear correlation among them, and the correlation between water content and void ratio is the best. |
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| Keywords: | oceanic polymetallic nodule surface sediment physical property |
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