镍矿砂液化演变过程的摇摆台试验研究  

Plateform experiment and research of nickel ore liquefaction process

作　　者：管陈 董国祥[1] 高家镛 金允龙[1] 

机构地区：[1]上海船舶运输科学研究所、航运技术与安全国家重点实验室,上海200135

出　　处：《水动力学研究与进展（A辑）》2014年第6期700-705,共6页Chinese Journal of Hydrodynamics

基　　金：国家重点基础研究发展计划项目(973计划,2012CB723804)~~

摘　　要：风浪中船舶剧烈的摇荡运动将导致运输船舱内的镍矿砂发生液化。液化后的镍矿砂易产生流动,不仅对船舶产生附加力矩,而且会随着船体摇荡运动的持续和运动幅值的增加,进一步导致液化镍矿砂的偏载现象。这种附加力矩及偏载现象使船舶稳性降低,严重影响船舶航行的安全性,某些情况下甚至导致船舶倾覆。许多装载镍矿砂散货船的海损事故(倾覆)表明,镍矿砂液化是船舶海上事故的主要原因。为了深入认识镍矿砂液化及偏载现象的机理,该文通过装载镍矿砂货舱模型的六自由度运动平台试验,详细分析了镍矿砂液化演变过程,测量了液化镍矿砂产生的动态倾侧力矩,并分析了镍矿砂偏载形成的原因。Ship severe motion in wind wave will lead to the liquefaction of nickel ore in carrier＇s cargo holds. The flow of liquefied nickel ore generates additional moment, and brings about the unbalance loading with the increase of motion time and amplitude. The additional moment and unbalance loading reduces ship＇s stability, affects the navigation safety, and even results in ship capsizing. Many marine accident shows that nickel ore liquefaction is a major cause of ship accident. In order to further understand of the mechanism of nickel ore liquefaction and unbalance loading, this experiment was carried out and combining with cargo models and six DOF platform, the analyzing liquefaction process of nickel ore, and measuring the dynamic heeling moment, the causes of unbalance loading were analyzed in this article. Research results have important reference value on the analysis of similar maritime accidents and improving sailing safety of nickel ore ship.

关 键 词：镍矿砂液化 运动自由度 泥水浆晃荡 晃荡力矩 

分 类 号：U661.31[交通运输工程—船舶及航道工程]