水流作用下自升降式张力腿网箱水动力学特性试验研究  

Experimental study on the hydrodynamic characteristics of self-lift tension leg cage in current

作　　者：黄六一[1] 杨正 李玉岩[1] 邬骞力 王刚 程晖[1] HUANG Liuyi;YANG Zheng;LI Yuyan;WU Qianli;WANG Gang;CHENG Hui(College of Fisheries,Ocean University of China,Qingdao 266003,China)

机构地区：[1]中国海洋大学水产学院,山东青岛266003

出　　处：《渔业现代化》2021年第2期9-15,共7页Fishery Modernization

基　　金：国家重点研发计划(2019YFD0901003);山东省重点研发计划(2017CXGC0107)。

摘　　要：自升降式张力腿网箱因其在水流作用下能够下潜到水中,具有在恶劣海况条件下,避免海水表面的风浪冲击,降低网箱系统被破坏风险的优点,具有良好的市场前景。根据田内准则,运用水槽模型试验方法,研究了周长60 m,网高16 m张力腿网箱在水流作用下的缆绳张力、网箱下潜深度、容积损失率与流速的关系。结果显示:张力腿网箱缆绳张力随流速增加而增加,且主要受力集中在迎流面的缆绳上;张力腿网箱可以在水流作用下自动下潜,流速0.8 m/s时,下潜深度可达11.91~17.79 m,从而能够实现网箱抗风浪的目的,另外可根据需要调整浮架浮力使网箱沉降深度达到合理水层区间;在低流速下各配置张力腿网箱容积损失率较小,在流速0.8 m/s时,最大容积损失率32.5%,小于类似配置的重力式圆形网箱。研究结果可为张力腿网箱的设计与应用提供参考。The self-lift tension leg cage can dive into the water under the action of currents.It has the advantages of avoiding the impact of wind and waves and reducing the risk of damage to the cage system under severe sea conditions.It has a good market prospect.According to the Tauti Criterion,the relationship between the cable tension,the dive depth of cage,the volume loss rate,and the flow velocity of the tension leg cage with girth of 60 meters and height of 16 meters was studied by using flume model test method.The results show that the cable tension of the tension leg cage increases with the increase of the flow velocity,and the main force is concentrated on the cable facing the current.The tension leg cage can automatically dive under the action of the current.The dive depth can reach 11.91-17.79 m when the flow velocity is 0.8 m/s,which can achieve the purpose of anti-waves.In addition,the buoyancy of the floating frame can be adjusted according to the need to make the settlement depth of the cage reach a reasonable water layer interval.At low flow velocity,the volume loss rate of the tension leg cage is small,and the biggest volume loss rate is 32.5%when the flow velocity is 0.8 m/s,which is smaller than that of the gravity circular cage with a similar configuration.The results can provide a reference for the design and application of the tension leg cage.

关 键 词：张力腿网箱 模型试验 水动力特性 下潜深度 容积损失 

分 类 号：S953.4[农业科学—水产养殖]