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大洋多金属结核深海采矿扬矿管所受水平液动力不仅受系统参数、海浪和海流的速度和加速度的影响,而且还随着时间和水深等因素而变化。分析了海浪水质点的速度和加速度与深度的关系,并根据Morison方程详细推导了液动力的修正方程,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余弦曲线,而在同一时刻,总液动力从海面至水深200m内迅速递减至67.54N,其最大值为32084.45N。为整体方案的可行性分析以及扬矿系统的设计和校核提供依据。
The horizontal hydrodynamic forces experienced by the oceanic polymetallic nodules in deep-ocean mining pipelines are not only affected by system parameters, speed and acceleration of ocean waves and currents, but also by time and water depth. The relationship between velocity and acceleration and depth of seawater mass points was analyzed. According to the Morison equation, the hydrodynamic correction equation was deduced in detail, and the curve of hydrodynamic force with time and depth was obtained. At the same water depth, the law of total liquid dynamics changes with time close to the cosine curve, while at the same time, the total hydrodynamic pressure decreases rapidly from sea surface to water depth within 200m to 67.54N, the maximum value is 32084.45N. It provides the basis for the feasibility analysis of the overall plan and the design and checking of Yang Yang system.