关键词: 深海采矿, 扬矿管, 绕流阻力, 非线性变形, 强度

Abstract: Lifting pipe of deep seabed mining not only undertake the function of minerals conveying，but also endure the weights of systerm.It endures wave force，ocean current force，seawater，pressure，wave dynamic lodot.The deformation and stress are very comolex and possiblly bring hidden trouble to the system.This article use the mechanics and limited finite element idea to disperse the whole pipe.The distortion curve is drawn in various circumstance by the iteration programming.By analyzing the nonlinear distortion on lifting pipe，the conclusion that the remining ship's rclocity opposite the ocean flow is the crucial factor affecting the lifting pipe of deep seaded mining pipe distortion is drawn，which has a higher reference value to the design of lifting pipe and intensity checking.   

Key words: Seabed mining, Lifting pipe, Drag force, Non-linear deformation, Intensity