Fishing boats are usually anchored side by side in the harbor because of the small structural size and poor resistance to wind and waves. A series of physical model experiments are conducted to investigate the motion characteristics of multiple fishing boats that are moored together. A decay test in calm water is conducted to study the natural period and damping coefficients. Regular wave experiments are performed to analyze the roll motion response of each boat for four modes (different numbers of boats side-by-side). The results indicate that the “natural period” of each boat for the mode of multi-boats especially three or four boats, is slightly smaller than that of a single boat, whereas the damping coefficient is visibly larger than that of a single boat. The maximum roll angle of each boat does not appear at the same time under a 90° incident wave. Small roll motion energy is generated at low frequencies and high frequencies when multiple boats are moored together. The energy decreases with the increasing wave period. The roll motion responses of each boat in four modes exhibit different trends with the increasing wave frequency. The number of boats and boat position have significant effects on roll motion.

渔港的浅层土和海底表层通常都是淤泥质黏土和淤泥,并不具有较强的物理力学指标,这对渔港自身的稳定性十分不利.因此,非常有必要结合渔港的实际情况,通过防波堤工程结构的合理设计,加强对渔港的保护,从而充分发挥渔港的重要作用,助推我国渔业防灾减灾事业的发展.

渔港防波堤及口门布置方案直接影响港内波高掩护,水流泥沙运动及航道走向等方面,关系渔港建设效果的关键.本文针对广西北海南万中心渔港口门不同防波堤平面布置方案,结合波浪、潮流泥沙数学模型手段,以上述影响方面为考察因素,研究不同防波堤及口门平面布置方案对渔港建设效果,总结防波堤及口门平面布置方案原则.

渔港经济区是现代渔业产业高质量发展的重要平台,是渔区振兴和渔业现代化的重要支撑.建设渔港经济区,重在延长产业链、提升价值链、畅通供应链,促进产业融合发展.本文在对广东省渔港经济区建设背景及产业发展情况分析的基础上,运用系统分析方法,分析了广东省渔港经济区产业发展存在产业结构不平衡、产业链条不完整、产业效益不显著等问题,并通过研究广东省17个沿海渔港经济区建设规划中产业发展内容和方向,提出了完善渔港经济区产业结构、构建渔港经济区全产业链、优化渔业渔村休闲旅游业、培育渔港经济区电子商务、培养渔港经济区知名品牌等渔港经济区产业发展建议,以期对全国沿海渔港经济区的建设有一定的借鉴意义.

2018年4月,国家发展改革委和农业农村部联合发布《全国沿海渔港建设规划(2018-2025年)》,提出推动形成十大沿海渔港群,建设形成93个渔港经济区,推动产业集聚、人流集聚和各种资源要素集聚,进一步繁荣区域经济,为沿海经济社会可持续发展做出重要贡献;2021年,中央一号文件和《农业农村部关于落实好党中央、国务院2021年农业农村重点工作部署的实施意见》均提出推进渔港建设和管理改革,建设渔港经济区."十四五"期间,渔港建设将逐步迈进"打造渔港经济区"的高质量发展阶段,建设沿海渔港经济区,首先要编制好渔港经济区建设规划,为渔港经济区的建设提供指导和依据.

该文结合某水库工程高混凝土面板堆石坝过鱼设施布置方案研究提出了升鱼机方案,升鱼机方案不仅适于高坝过鱼,同时能较好适应水库水位的较大变幅.针对升鱼机方案进行了集鱼系统、提升运输系统、码头转运系统、运输放流系统设计.集鱼系统的集鱼效果和索道提升运行效果是保证升鱼机正常运行的关键,本研究可为后期开展相关模型试验研究提供依据和支撑.

Currently, the allowable wave height of anchorage in fishing port in our country is empirically determined with reference to foreign regulations, which is lack of effective studies.The physical model experiment on the allowable wave height of bow-stern anchoring of three ships side by side is carried out and 275HP trawler is represented as the typical ship. The anchoring force and movement of bow-stern anchoring system of three fishing boats under irregular waves are studied and further compared with the results of the single boat. The experimental results show that the anchoring force and rolling angle of the inside ship which is not directly affected by the wave are bigger than the outside ship which is directly affected by the wave.When the wave height and wave period in the port are bigger, the anchoring method of three ships side by side is safer than the single boat anchoring.According to the experiment, the allowable wave height for three ships anchored side by side is bigger than the value for the single ship anchored, and 0. 9 m is suggested in the experiment.