履齿结构对深海沉积物扰动分析  

Deep-sea sediment disturbance analysis using a tracked teeth structure

作　　者：胡琼[1] 王洋洋 欧雨佳 朱静妍 HU Qiong;WANG Yangyang;OU Yujia;ZHU Jingyan(College of Electromechanical Engineering,Central South University,Changsha 410000,China)

机构地区：[1]中南大学机电工程学院,湖南长沙410000

出　　处：《哈尔滨工程大学学报》2024年第6期1127-1134,共8页Journal of Harbin Engineering University

基　　金：国家重点研发计划(2021YFC2801701-02);湖南省揭榜制(2021JC0010);湖南省科技重大专项(2020GK1022)。

摘　　要：为探究集矿车在行进过程中履带运动对深海沉积物的扰动机理,并建立适用于机械结构与沉积物作用的仿真模型,结合水槽实验和模拟分析,设定对照试验,研究机械结构运动对沉积物的扰动作用和羽状流扩散现象。实验与仿真结果表明:偏置一字形履齿低扰动性能较好,扰动最大速度在1.5 m/s以下;扰动源的下陷深度和转速对水槽中的浊度变化有显著影响,浊度计最大和最小测量值为4 381.3 mg/L和3 073.3 mg/L,相差29.9%,峰值时间相差超过50%。搭建欧拉多相流模型,设定参数和边界条件,仿真与试验结果接近,可用于后续开展小范围内的机械扰动研究。To investigate the disturbance mechanism of the track movement on deep-sea sediment during the traveling process of an ore-collecting vehicle and to establish a simulation model applicable to the role of mechanical structure and sediment—combined with an experimental and simulation water flume analysis—a control test was set up to study the disturbance effect of mechanical structure movement on the thin and soft substrate and the phenomenon of plume flow diffusion.The experimental and simulation results show that the offset zigzag tracked teeth perform better in low disturbance,with <1.5 m/s as the maximum speed of disturbance;the subsidence depth and rotational speed of the disturbance source considerably affect the change in turbidity in the flume,with maximum and minimum measurements of the turbidimeter of 4 381.3 mg/L and 3 073.3 mg/L,respectively,having a difference of 29.9%,and a difference of >50% in the peak time.The Eulerian multiphase flow(EMP) model was constructed,and the parameters and boundary conditions were set.The simulation is near the experimental result and can be used to study mechanical perturbation in a small range.

关 键 词：深海采矿 履齿 沉积物 扰动 水槽实验 欧拉多相流模型 浊度 数值仿真 

分 类 号：TH69[机械工程—机械制造及自动化]