离岸系泊式海藻牧场的动力响应分析

Dynamic response analysis of offshore moored kelp farms

为应对全球气候变暖,助力实现国家“双碳”目标,提出建设蓝碳工程——离岸系泊式海藻牧场,论述了离岸海藻牧场的设计分析流程,并对海藻牧场单元的核心养殖设施进行了数值模拟分析。结果表明,在极端海况下,系泊缆绳、养殖绠绳、连接绳和吊绳的张力均未超过极限破断值;浮标升沉运动对海藻正常接受光照的影响较小,海藻柄部发生破断也为极小概率事件;所提出的设计分析方法可为水深超过40 m的离岸海域海藻牧场的系泊设计提供参考。

To respond to the global climate change and to help achieve the“double carbon”goal in China,this paper proposed an idea of implementing the“Blue Carbon Project”offshore moored kelp farms.Based on this idea,the design and analysis procedures for the offshore moored kelp farms were described,and numerical simulations of core breeding facility in the kelp farm module were also conducted.The results show that tension values of mooring ropes,breeding boom ropes,connecting ropes and lifting ropes do not exceed the breaking limit values in extreme sea conditions.Besides,the heaving motion of buoys makes little impact on the regular sunlight exposure of seaweed and the breakage of seaweed’s holdfast is an event of low probability.The design and analysis method proposed in this paper will provide a reference for the mooring design of kelp farms with a water depth over 40 m.