大洋多金属结核1km海上开采实验系统扬矿管水平液动力分析和计算  

Analysis and calculation of the hydrodynamic force of lifting pipes in a 1km pilot-scale mining system of polymetallic nodules

作　　者：冯福璋[1] 冯雅丽[1] 张文明[1] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083

出　　处：《北京科技大学学报》2006年第11期1042-1046,共5页Journal of University of Science and Technology Beijing

基　　金：国家长远发展专项项目;国际海底区域研究开发'十五'项目(No.DY105-03-02-17)

摘　　要：大洋多金属结核1km海上开采实验系统的扬矿管所受水平液动力由多个参数决定.本文从系统总体设计参数出发,得出了其他各种参数值,并根据Morison方程详细推导了海浪和海流的速度和加速度的表达式,最后采用数值积分的方法得出了液动力随时间和深度的变化曲线.在同一水深处,总液动力随时间的变化规律接近于正弦(余弦)曲线;而在同一时刻,总液动力则随水深绝对值的增加而递减,在水深0m至水深-200m内,递减速度很快;总液动力最大值为3·790kN.The hydrodynamic force of lifting pipes in a 1 km pilot-scale mining system of polymetallic nodules is determined by many parameters. Based on the integrated design parameters of the 1 km pilotscale mining system, the suitable wave theory was selected and all kinds of parameters were presented. A numerical integration procedure was formulated for calculation of the hydrodynamic force according to the Morison equation. The relationship among the force, time and depth below ocean surface was finally studied. At the same depth below ocean surface, the total hydrodynamic force is varied with increasing time as a function of sine. While at the specified time, the total hydrodynamic force is decreased with increasing depth below ocean surface. The lapse rate is particularly fast from 0 to 200 m in depth. The maximum of hydrodynamic force is 3. 790 kN.

关 键 词：海上采矿 多金属结核 扬矿管 液动力 拖曳力 惯性力 Morison方程 

分 类 号：P751[交通运输工程—港口、海岸及近海工程] O242.21[天文地球—海洋科学]