渔业现代化2017，Vol.44Issue(4)：44-49,6.DOI:10.3969/j.issn.1007-9580.2017.04.007
大潮差下浅海养殖围网防纠缠技术试验研究
Experimental study on anti-entanglement technology of purse seine for shallow sea culture in spring tide range
摘要
Abstract
Spring tide has a great influence on installation of purse seine aquaculture facilities, including serious netting accumulation, entanglement, bottom netting getting away from the base, netting tear, etc.Therefore, it is very important to study the anti-entanglement technology of netting.A small-scale purse seine model was made and 3 different schemes for settlement and lift of netting were designed (i.e., assembled horizontal line, sinking force lines and buoyancy lines) to simulate the netting accumulation in flood and ebb tides.The water level (water level was reduced by 30-60 cm) of obvious netting accumulation was selected for analysis.The results showed that when the water level was reduced by 30 cm, because the method of longitudinal increasing downward of buoyancy and sinking force was used in Scheme C, the netting reached the maximum accumulation height and the minimum accumulation coefficient.When the water level was reduced by 40 cm, 50 cm or 60 cm, the same results were obtained.The study showed that the higher the netting was accumulated, the smaller the accumulation coefficient was, and the netting might accumulate in more layers, resulting in the less possibility of entanglement.The actual application result proves that Scheme C is suitable to be used in spring tide waters.关键词
围网养殖/网具纠缠/堆积高度/堆积系数/模型试验/大潮差海域Key words
purse seine aquaculture/nets entanglement/accumulation height/accumulation coefficient/flume experiment/spring tide waters分类
农业科技引用本文复制引用
李怡,叶修富,马家志,陈舜,萧云朴,蔡厚才,宋伟华..大潮差下浅海养殖围网防纠缠技术试验研究[J].渔业现代化,2017,44(4):44-49,6.基金项目
国家自然科学基金(40876049) （40876049）
浙江省自然科学基金(LY14C190005) （LY14C190005）
浙江省大学生科技创新活动计划(2016R411012) （2016R411012）
