基于可燃冰开发的深吃水半潜式平台水动力性能分析

以应用于1 500 m作业水深的深吃水半潜式平台为研究对象，通过水池模型试验对水动力性能进行深入研究，并且与某典型浅吃水半潜式平台进行对比。结果表明，深吃水半潜式平台纵摇、横摇和垂荡固有周期显著短于传统浅吃水平台，在波频范围内前者运动响应大幅减小，在作业海况下最大摇摆运动为1.54°、最大水平运动为13.12 m，具有良好的运动性能，能够满足深海可燃冰开发的工程需求。

Hydrodynamic Performance Analysis of Deep-Draft Semi-Submersible Platform Based on Combustible Ice Exploitation

The deep-draft semi-submersible platform, which is applied to 1 500 m operation water depth, is taken as the research object. Through the hydrodynamic model test, the hydrodynamic performance is deeply studied, and compared with that of a typical shallow-draft semi-submersible platform. The results show that the natural period of rocking and heave motion of the deep-draft semi-submersible platform is significantly shorter than that of the shallow-draft platform, the motion response of the former is greatly reduced in the wave frequency range, the maximum rocking motion is 1.54°and the maximum horizontal motion is 13.12 m under the operating sea condition, which means the deep-draft semi-submersible platform is of excellent motion performance and can meet the engineering needs of deep-sea combustible ice exploitation.