重力活塞取样器贯入模型研究  

Study of Penetration Depth From a Model of Gravity Piston Corer

作　　者：杜星[1,2] 孙永福 宋玉鹏[1,2] 周其坤 焦鹏飞[1,2] 

机构地区：[1]国家海洋局第一海洋研究所,山东青岛266061 [2]青岛海洋科学与技术国家实验室海洋地质过程与环境功能实验室,山东青岛266235

出　　处：《海洋科学进展》2018年第1期88-97,共10页Advances in Marine Science

基　　金：海洋公益性行业科研专项--近海海底地质灾害预测评价及防控关键技术研究(201005005);青岛海洋科学与技术国家实验室鳌山科技创新计划项目--海底地质灾害监测预警与评估关键技术研究(2015ASKJ03);国家重点研发计划项目--水合物形成与分解过程微观结构与宏观力学特性(2017YFC0307305)

摘　　要：重力活塞取样器贯入深度研究对于取样效率的提高和仪器安全有着重要影响,根据取样海底沉积物类型及工程参数对取样器可贯入深度进行预判是研究的重点。基于重力活塞取样器结构,设计并制造了重量可调的重力取样器模型,增加了底质桶与支架等配套设施。按照控制变量法分别设计了针对取样器质量、贯入速度及沉积物类型的试验。试验结果表明,底质类型、取样器质量和贯入速度都可以对贯入深度产生不同程度的影响。在现有重力取样器贯入深度公式的基础上,根据本次试验得到的数据对其进行修正。改进后的公式计算结果与原来相比误差更小、更接近于真实取样数据。Studying on gravity piston corer penetration depth has an important effect on improvement of efficiency and safety of equipment.Prediction of penetration depth,which based on seabed sediment type and engineering parameters,was the focus of this kind of study.According to the general structure of gravity piston corer,this study designed and manufactured a weight-changeable gravity corer,and added sediment barrels,trestle and other supporting facilities into the corer.According to control variable method,this study then designed a series of tests for different weights,penetration speeds and sediment types.Results showed that sediment type,weight and penetration speed all play different degrees of influences on penetration depths.Based on test data,we revised the existing gravity corer penetration formula a formula.The calculation results by using the revised formula have smaller error and were closer to the real sampling data relative to the original formula.

关 键 词：重力取样 重力活塞取样器 能量守恒 贯入深度 

分 类 号：P716[天文地球—海洋科学]