软管和矿车对深海采矿系统的影响规律分析

摘要

针对海洋采矿输送系统中软管发生变形量过大容易造成管道堵塞和软管对采矿车作用力影响采矿车正常作业的问题.为解决上述问题,提出了将软管和矿车的影响纳入深海采矿系统的仿真分析中.根据采矿输送系统在作业的过程中,管道外受到波流联合作用,管道内受到浆体作用的情况,采用有限元软件对其进行计算分析.研究结果表明:软管的形态对流场分布、压力损失和矿车的作用力影响较大,软管处于极限变形时,固体颗粒部分回流造成管道堵塞;最大节点力3675.4N,影响矿车的正常作业.由于矿车的位置对软管的形态有直接的作用,在6级风浪的情况下,适当改变矿车的位置,软管两端的压力损失减小,可节约开采成本.最后通过实验验证仿真结论的准确性.%Considering the fact that the flexible hose in deep-sea mining transporting system is likely to block under large deformation and the nude force on nodule collector tends to influence its normal operation,the influence of flexible hose and nodule collector simulation analysis was applied to deep-sea mining transporting system.Based on the fact that transporting pipe is under inter-action of wave and current from outside and slurry from inside,rigid pipe and flexible hose was analyzed.The result show that the shape of flexible hose has influence on the flow field distribution,pressure loss and node force on nodule collector.When the flexible hose is at limit deformation,solid particles partial reflux leads to blocking.Maximum node force is 3675.4N,which influences normal operation of nodule collector.Location of nodule collector has direct influence on the shape of flexible hose.When the wave is at grade 6,properly choosing the location of nodule collector can reduce pressure loss and mining cost.Finally,simulation results and conclusions were verified through experiments.