海底沉积物取样的扰动机理研究

秦华伟; 陈鹰; 顾临怡

海底沉积物取样的扰动机理研究

1.
杭州电子科技大学机械电子工程研究所, 浙江杭州 310018
2.
杭州电子科技大学机械电子工程研究所, 浙江杭州 310018;浙江大学流体传动及控制国家重点实验室, 浙江杭州 310027
3.
浙江大学流体传动及控制国家重点实验室, 浙江杭州 310027

基金项目: 国家自然科学基金资助项目(50675055)

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出版历程
- 收稿日期: 2006-04-17
- 修回日期: 2006-08-08

Research on disturbing theory of deep-sea sediment sampling

1.
Institute of Machine and Electronic Engineering, Hangzhou University of Electronic Science and Fechnology, Hangzhou 310018, China
2.
Institute of Machine and Electronic Engineering, Hangzhou University of Electronic Science and Fechnology, Hangzhou 310018, China;State Key Laboralory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China
3.
State Key Laboralory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China

摘要

摘要: 海底沉积物取样技术对大洋诸多科学研究来说非常重要,各种研究目标的实现与沉积物样品的质量息息相关.在使用常规管状取样器对松软或轻微固结的沉积物取样时,沉积物样品的扰动总是不可避免的.以机械手持式沉积物取样器为原型机,建立了管状取样器的取样过程模型,分析了沉积物样品的扰动机理;采用球形孔扩张理论获得了沉积物土体受到取样管挤压扩张的理论解;结合太平洋具体沉积物土体物理力学参数,对管状取样器取样造成沉积物扰动的状况给出了一个定量描述,并且提出取样管壁的厚度是减小沉积物扰动的关键参数.
- 海底 /
- 沉积物 /
- 取样 /
- 扰动
Abstract: Sampling technology of deep sea sediment is very important for many aspects of ocean researches because the realization amony their research goals is closely related to the quality of sediment samples.While the soft or lightly clotty sediment is sampled with general pipecores,it is always inevitable that sediment samples are disturbed.On the basis of an original equipment witch is named as the manipulat or holding sedimentcorer,a model of sampling process is built and the theory of sampling disturbing is analyzed;the extrusion expansion solution of sediment is gotten through adopting the spherical cavity expansion theory;finally,combining with actual parameters of the Pacific Ocean sediment,a quantitative description on disturbing status of deep sea sediment is presented,and a conclusion that the wall thickness of the core is a key parameter for reducing disturbing is put forward.
- seafloor /
- sediment /
- sampling /
- disturbance

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参考文献(16)

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