深海采矿扬矿管的浮力提升方案分析

Buoyancy lifting scheme for marine risers in deep-sea mining system

随着现代工业的消耗,有限的陆地资源已经难以支撑未来人类社会的可持续发展,因而对海洋资源的开发越来越受到重视。扬矿管作为深海采矿系统中的关键部件,连接了海面矿船和海底矿车。为避免长而柔的扬矿管道在深海作业时发生触地或打结等现象,影响作业效率,通常在管道上布置浮力块进行提升。考虑浮力提升装置布局的几个设计参数,包含总提升浮力、水平拉力、浮力段段数以及浮力段分布长度,通过有限元计算评价扬矿管的静态构型,探究几个参数对结构构型一般性的影响规律,从而提出合理的浮力分布方案。

With the consumption of modern industry, the limited land resources have been unable to support the sustainable development of human society in the future, so more and more attention has been paid to the exploitation of marine resources. Marine riser is a key component in deep-sea mining system, which connects mining ship on the sea surface and the mining car on the seabed. In order to avoid the long and soft lifting mine pipeline in the deep-sea operation to touch the seabed or tie up and other phenomena, which will affect the operation efficiency, buoyancy modules are usually used to lift the riser. Considering several design parameters of the buoyancy lifting modules layout, including the total lifting buoyancy, horizontal tension, number of buoyancy segments and the distribution length of buoyancy segments, the static configuration of the marine riser is evaluated by finite element method, and the general influence law of these parameters on the structure configuration is explored, so as to propose a reasonable buoyancy distribution scheme.