渔业现代化

渔业现代化

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船型桁架结构网箱系泊方式优选及影响参数分析

张 松1,2，庞国良2,3，黄小华2,3，吴元紧1，陈欣铤2，陈昌平1(1大连海洋大学海洋与土木工程学院，辽宁 大连 116023；
2中国水产科学研究院南海水产研究所,农业农村部外海渔业开发重点实验室，广东广州 510300；
3三亚热带水产研究院,海南省深远海渔业资源高效利用与加工重点实验室，海南 三亚 572000)   

  1. (1大连海洋大学海洋与土木工程学院，辽宁 大连 116023；
    2中国水产科学研究院南海水产研究所,农业农村部外海渔业开发重点实验室，广东广州 510300；
    3三亚热带水产研究院,海南省深远海渔业资源高效利用与加工重点实验室，海南 三亚 572000)
  • 出版日期:2022-10-20 发布日期:2023-01-29
  • 通讯作者: 庞国良(1992—)，男，博士，助理研究员，研究方向：深远海养殖设施工程；E-mail：guoliangpang@126.com
  • 作者简介:张松(1998—)，男，硕士研究生，研究方向：网箱水动力分析；E-mail：zhangsong0816@qq.com
  • 基金资助:
    国家自然科学基金(32173024)；海南省重大科技计划项目(ZDKJ2021013)；海南省自然科学基金(322QN438)；农业农村部外海渔业开发重点实验室开放基金(LOF2021-04)；中国水产科学研究院中央级公益性科研院所基本科研业务费专项资金(2020TD77)；中国水产科学研究院南海水产研究所中央级公益性科研院所基本科研业务费专项资金(2019SD10, 2021TS04)

Optimization of mooring mode and analysis of influencing parameters for ship-type truss cage

ZHANG Song1,2,PANG Guoliang2,3, HUANG Xiaohua2,3, WU Yuanjin1, CHEN Xinting2, CHEN Changping1(1.College of Marine and Civil Engineering,Dalian Ocean University,Dalian 116023, Liaoning,China;#br# 2.South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Open-Sea Fishery Development, Ministry of Agriculture and Rural Affairs, Guangzhou 510300, Guangdong, China;#br# 3. Sanya Tropical Fisheries Research Institute, Key Laboratory of Efficient Utilization and Processing of Marine Fishery Resources of Hainan Province, Sanya 572000, Hainan, China)   

  1. (1.College of Marine and Civil Engineering,Dalian Ocean University,Dalian 116023, Liaoning,China;
    2.South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Open-Sea Fishery Development, Ministry of Agriculture and Rural Affairs, Guangzhou 510300, Guangdong, China;
    3. Sanya Tropical Fisheries Research Institute, Key Laboratory of Efficient Utilization and Processing of Marine Fishery Resources of Hainan Province, Sanya 572000, Hainan, China)
  • Online:2022-10-20 Published:2023-01-29

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摘要： 深远海网箱在外海作业会受到极端恶劣海况的影响，稳定有效的系泊系统对保证网箱良好的耐波特性、保障养殖效益意义重大。本研究针对一种单点系泊船型桁架结构网箱建立其水动力分析模型，通过开展相关数值计算并与物理试验结果进行对比验证该模型的准确性；在此基础上，通过分析多组波浪条件下网箱动态响应、锚链系泊张力和最小卧链长度开展了“一”字型系泊和“Y”字型系泊两种系泊方案的对比优选，在确定系泊方案后，从锚链长度和配重重量两个方面开展系泊参数分析研究。结果显示：“Y”字型系泊效果要优于“一”字型系泊；不同锚链长度及配重重量对网箱平台运动响应影响较小，但锚链长度的延长和配重重量的增加可以有效降低系泊张力峰值和延长卧链长度。本研究可为桁架结构网箱系泊分析及优化设计提供计算依据。

关键词: 船型网箱, 系泊方式, 数值模拟, 优选分析

Abstract: The operation of a deep-sea cage in the open sea is affected by extreme and severe sea conditions. An effective and reliable mooring system is the key to ensuring the excellent seakeeping of the cage and good aquaculture benefits. In this paper, the hydrodynamic numerical model of a single point mooring ship-type truss cage was established. And then the model was verified by comparison between numerical calculation results and physical experiment results. On this basis, two mooring types, "—" and "Y", were presented and their characteristics were compared by analyzing the dynamic response of the cage, mooring tension of the anchor chain, and minimum lying length of the chain under multiple wave conditions. After that, the mooring influencing parametric analysis was implemented from two aspects: anchor chain length and weight of clump weight. The results show that the "Y" mooring system is better than the "—" mooring system and different anchor chain lengths and clump weights have little effect on the motion response of the cage, but the increase of anchor chain length and weight of clump weight can effectively reduce the peak mooring tension and extend the length of lying chain. This research can provide the basis for the mooring analysis and optimization design of truss cages.

Key words: ship-type cage, mooring mode, numerical simulation, optimization analysis