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Experimental Study on Diffusion Characteristics of Sediment Plumes in Still Water During Deep-Sea Mining
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Zelin LIU1, Shiping CHEN2, Hao ZHENG2, Xiang WU1, Qiuhua RAO1
Mining and Metallurgical Engineering | 2025, 45(3) : 63 - 68
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Mining and Metallurgical Engineering | 2025, 45(3): 63-68
• MINING •
Experimental Study on Diffusion Characteristics of Sediment Plumes in Still Water During Deep-Sea Mining
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Zelin LIU1, Shiping CHEN2, Hao ZHENG2, Xiang WU1, Qiuhua RAO1
Affiliations
  • 1.School of Civil Engineering, Central South University, Changsha 410075, Hunan, China
  • 2.State Key Laboratory of Exploitation and Utilization of Deep-Sea Mineral Resources, Changsha Research Institute of Mining and Metallurgy Co., Ltd., Changsha 410012, Hunan, China
Published: 2025-06-01 doi: 10.3969/j.issn.0253-6099.2025.03.010
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A numerical simulation model was established with Fluent software to analyze the disturbance effect of a subsea collector vehicle on seabed sediments, and the generation mechanism of seabed sediment plumes was analyzed. A large-scale tank experiment on diffusion of sediment plume was conducted to investigate the morphological characteristics and concentration variation rule of sediment plume under different initial mass concentrations. The results show that seabed sediment plumes are created mainly by the disturbance due to the movement of a collector vehicle. The overall morphological characteristics of such sediment plume under different discharge concentrations are roughly similar, and the diffusion of sediment plumes can undergo three stages: initial discharge, primary settlement and diffusion, and re-settlement and diffusion. The plume concentration also varies in the following three steps: rapid rise, rapid decline, and slow decline before stabilization.

deep-sea mining  /  environmental impact assessment (EIA)  /  marine environmental protection  /  collector vehicle  /  seabed sediment  /  suspension  /  plume  /  large-scale tank  /  still water test  /  diffusion  /  sedimentation
Zelin LIU, Shiping CHEN, Hao ZHENG, Xiang WU, Qiuhua RAO. Experimental Study on Diffusion Characteristics of Sediment Plumes in Still Water During Deep-Sea Mining[J]. Mining and Metallurgical Engineering, 2025 , 45 (3) : 63 -68 . DOI: 10.3969/j.issn.0253-6099.2025.03.010
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Year 2025 volume 45 Issue 3
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Article Info
doi: 10.3969/j.issn.0253-6099.2025.03.010
  • Receive Date：2024-11-28
  • Online Date：2026-03-19
  • Published：2025-06-01
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  • Received：2024-11-28
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Affiliations
    1.School of Civil Engineering, Central South University, Changsha 410075, Hunan, China
    2.State Key Laboratory of Exploitation and Utilization of Deep-Sea Mineral Resources, Changsha Research Institute of Mining and Metallurgy Co., Ltd., Changsha 410012, Hunan, China
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https://castjournals.cast.org.cn/joweb/kygczz/EN/10.3969/j.issn.0253-6099.2025.03.010
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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