深海多金属结核抽吸式集矿运动特性研究

薛景天; 夏秋; 贾浩; 李宸

doi:10.21656/1000-0887.450329

深海多金属结核抽吸式集矿运动特性研究

doi: 10.21656/1000-0887.450329

浙江理工大学全省复杂流动与流体工程装备重点实验室，杭州 310018

基金项目:

国家自然科学基金（52206056）；国家级大学生创新创业训练计划项目（202410338046）；浙江省自然科学基金（ZCLY24E0601）

详细信息

作者简介:
薛景天（2004—），男，本科生（E-mail: xjt3293509927@163.com）；贾浩（1988—），男，特聘副教授，博士（通讯作者. E-mail: jiahao@zstu.edu.cn）.

通讯作者:
贾浩（1988—），男，特聘副教授，博士（通讯作者. E-mail: jiahao@zstu.edu.cn）.

中图分类号: O359
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出版历程
- 收稿日期: 2024-12-13
- 修回日期: 2025-04-05
- 网络出版日期: 2025-12-31

Study on the Motion Characteristics of Suction-Based Deep-Sea Polymetallic Nodule Mining

Zhejiang Key Laboratory of Multiflow and Fluid Machinery, Zhejiang Sci-Tech University, Hangzhou 310018, P.R.China

Funds:

The National Science Foundation of China(52206056)

摘要

摘要: 多金属结核矿产资源以粗颗粒结核的形式呈面式分布于深海海床.由于深海环境的脆弱和国际海底环境保护的紧迫性，研究集矿装置运动过程中的集矿特性和对海底的扰动具有实际意义.采用计算流体动力学与离散元耦合方法（computational fluid dynamics and discrete element method, CFDDEM）模拟了粗颗粒矿石在抽吸式集矿管作用下的采集过程.结果表明，管道倾斜放置便于管道迎流侧抽吸大量矿石，有利于提高颗粒采集率.集矿管水平运动和管道抽吸运动对流场形成叠加扰动，受该叠加扰动的影响，颗粒采集率随集矿管水平运动速度的增加先增大后减小，且一定程度上随集矿管倾斜角度的增加而增加.海底流场的湍动能随集矿管水平运动速度的增加而减小，随集矿管倾斜角度的增加先增大后减小.综合分析表明，集矿管水平运动速度为0.6 m/s和集矿管倾斜角度为45°是同时满足高采集率和低环境扰动的最佳工况，可为高性能深海多金属结核集矿装置的设计提供参考.
- 深海采矿 /
- 抽吸式集矿 /
- 颗粒运动 /
- 采集率 /
- 海底扰动 /
- CFD-DEM
Abstract: Polymetallic nodule mineral resources are distributed planarly in the form of coarse-grained nodules on the deep seabed. Owing to the fragility of the deep-sea environment and the urgency of environmental protection of the international seabed, it is of practical significance to study the collection rate and the disturbance of the seabed under different operating conditions during the movement of the mineral collecting device. A coupled computational fluid dynamics and discrete element method (CFD-DEM) was used to simulate the collection process of coarse-grained ore under the action of a suction collector pipe. The results show that, the tilted placement of the pipe facilitates the pumping of massive ores on the downstream side of the pipe, which is conducive to improving the particle collection rate. The horizontal movement of the collector pipe and the suction movement of the pipeline form a superposition of disturbances to the flow field; under the superposed disturbances, the particle collection rate increases and then decreases with the collector pipe horizontal movement speed, and increases with the collector pipe tilt angle to a certain extent. The turbulent kinetic energy of the seafloor decreases with the collector pipe horizontal movement speed, and increases and then decreases with the collector pipe tilt angle. Comprehensive analysis indicates that, the collector pipe horizontal movement speed of 0.6 m/s and the collector pipe tilt angle of 45° are the optimal working conditions to meet the requirements of high collection rates and low environmental disturbances in the parameter range of the study. The results can be used as a reference for the design of deep-sea polymetallic nodule collecting devices with high collection rates and low environmental disturbances.
- deep-sea mining /
- suction collection /
- particle motion /
- collection rate /
- seafloor disturbance /
- CFD-DEM

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参考文献(21)

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深海多金属结核抽吸式集矿运动特性研究

doi: 10.21656/1000-0887.450329

作者简介:
薛景天（2004—），男，本科生（E-mail: xjt3293509927@163.com）；贾浩（1988—），男，特聘副教授，博士（通讯作者. E-mail: jiahao@zstu.edu.cn）.

通讯作者:
贾浩（1988—），男，特聘副教授，博士（通讯作者. E-mail: jiahao@zstu.edu.cn）.

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Study on the Motion Characteristics of Suction-Based Deep-Sea Polymetallic Nodule Mining

计量

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留言板

深海多金属结核抽吸式集矿运动特性研究

doi: 10.21656/1000-0887.450329

作者简介: 薛景天（2004—），男，本科生（E-mail: xjt3293509927@163.com）；贾浩（1988—），男，特聘副教授，博士（通讯作者. E-mail: jiahao@zstu.edu.cn）.

通讯作者: 贾浩（1988—），男，特聘副教授，博士（通讯作者. E-mail: jiahao@zstu.edu.cn）.

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出版历程

Study on the Motion Characteristics of Suction-Based Deep-Sea Polymetallic Nodule Mining

计量

出版历程

目录

作者简介:
薛景天（2004—），男，本科生（E-mail: xjt3293509927@163.com）；贾浩（1988—），男，特聘副教授，博士（通讯作者. E-mail: jiahao@zstu.edu.cn）.

通讯作者:
贾浩（1988—），男，特聘副教授，博士（通讯作者. E-mail: jiahao@zstu.edu.cn）.