Layout design of net cages is crucial to the entire chain of mariculture.A suitable design improves aquaculture pro-duction and plays a critical role in ensuring safety of facilities.The circular gravity deep-sea net cages are the main facility for deep-sea aquaculture in the future,but their layout design mainly relys on past engineering experience,lack of certain theoreti-cal support.In this study,we divided the layout of circular gravity net cages into'cross'layout and'non-cross'layout.Based on these two categories,we provided the layout parameters and corresponding calculation formulas for different cage layouts from a theoretical perspective.Then,we analyzed the impact of different layout parameters such as the number of mooring lines,length of mooring lines and safety margin on the distance between cages and utilization rate of the planned sea area for net cages.The results show that with changes in the number,length and safety control distance of mooring lines,the utilization rate of the sea area of cross layout is more sensitive to the changes in non-cross layout.The sea area utilization rate under cross layout is signi-ficantly higher than that under non-cross layout,but it is still recommended to use the non-cross layout with higher safety at present.
关键词
重力式深水网箱/网箱布局/网箱间距/海域利用率
Key words
Circular gravity net cages/Layout design of net cages/Distance between cages/Sea area utilization rate
维普
万方数据