Experimental Study On Dynamic Characteristics Of Deep-sea Aquaculture Fishery With Ship-Type Truss Structure

At present,China's coastal heavy industry and coastal tourism are developing rapidly,some coastal waters are seriously polluted,offshore aquaculture space is further compressed,and offshore deep water aquaculture has become a common understanding of the industry.Deep-sea cages are usually located in offshore deep-sea waters.They have the remarkable advantages of good quality,high yield and great benefits of aquaculture products.They have become important facilities and equipment for deep-sea aquaculture to expand the space of marine aquaculture in China.In this paper,the dynamic characteristics of deep-sea aquaculture fishery with ship truss structure were studied by physical model test.This paper consists of five parts: The first chapter is the introduction part,which mainly introduces the research background of this paper and the research status of deep-sea cage culture industry,and describes the main research contents of this paper.In the second chapter,the scale of the model is determined according to the experimental facilities and conditions by using the gravity similarity criterion,and the corresponding fishing platform model is designed and manufactured,in which the mesh is designed by using the variable-scale method.In the third chapter,the motion law and force characteristics of the fishery platform under the action of waves are studied by physical model test.The effects of wave height,period and draft depth on the anchor chain force and the movement of the fishery platform are analyzed.The fourth chapter studies the dynamic characteristics of the fishery platform under the action of pure flow and the combination of wave and water flow,and analyzes the influence of wave,water flow and draft depth on the motion characteristics of the fishery platform,and the movement of the fishery platform under the action of wave current.The difference between the movement and the force of the fishery platform under the action of force and simple wave was compared and analyzed.At the end of the paper,the research work of this paper is summarized,and the future development of deep-sea fishing grounds is prospected.