海底射流开沟机模型试验及效果分析  

Model Test and Effect Analysis of Submarine Jet Trencher

作　　者：李振旺 赵淮宾 于宗冰 邹丽[2] 王凯 曹林 LI Zhenwang;ZHAO Huaibin;YU Zongbing;ZOU Li;WANG Kai;CAO Lin(China Ship Scientific Research Center,Wuxi 214000,Jiangsu,China;School of Naval Architecture,Dalian University of Technology,Dalian 116024,Liaoning,China;State Key Laboratory of Coastal and Offshore Engineering,DalianUniversity of Technology,Dalian 116024,Liaoning,China;The Chinese Society of Naval Architects and Marine Engineers,Beijing 100861,China;不详)

机构地区：[1]中国船舶科学研究中心,江苏无锡214000 [2]大连理工大学船舶工程学院,辽宁大连116024 [3]大连理工大学海岸和近海工程国家重点实验室,辽宁大连116024 [4]中国造船工程学会,北京100861

出　　处：《海洋工程装备与技术》2023年第4期44-51,共8页Ocean Engineering Equipment and Technology

摘　　要：为了保证海底管道与缆线的安全和稳定,人们采用了许多措施。其中,最为经济有效的方法是利用开沟机等相关设备将管道或缆线埋入海底。本文研究水下开沟,设计了一款具有轻型结构、可自主推进的水下射流开沟机,并对加工完成后的样机模型开展了水下开沟的试验。验证了所设计的开沟机在淹没状态下不仅可以完成自主推进工作,还能在管道流量达到50 m 3/h时破坏抗剪强度为8 kPa的沙土,最大沟深可达0.41 m,为后续的模型优化以及管线埋设提供理论与依据。Many measures have been used to ensure the safety and stability of submarine pipelines and cables.One of the most cost-effective methods is to use trenchers and other related equipment to bury the pipeline or cable into the seafloor.In this paper,a light-weight,autonomously propelled underwater jet trencher has been designed and conducted underwater trenching tests on the machined prototype model to verify that the designed trencher can trench under submerged condition,and complete the autonomous propulsion work to destroy sand with shear strength of 8 kPa when the pipeline flow reaches 50 m 3/h.The maximum ditch depth can reach 0.41 m.This work provides the theory and basis for subsequent model optimization and pipeline burial.

关 键 词：开沟机 水下射流 自主推进 开沟埋设 

分 类 号：O358[理学—流体力学]