海底水平管线悬空机制与动力调整方法研究现状

Review on the investigations of free-span mechanism and dynamic adjustment method for submarine horizontal pipelines

悬空是导致海底管线失事的主要原因之一,本文从海底水平管线的悬空机理、冲刷计算、涡激振动、动力响应以及动力调整方法等方面较为系统的对海底水平管线悬空的研究和实践进行了文献综述。首先,总结了海底水平管线的悬空机制以及冲刷悬空的计算经验公式;随后,总结了近些年来进行的冲刷悬空研究和动力响应研究,指出了存在的不足以及今后要努力的方向;此外,总结了海底水平管线动力调整的机理,通过具体的工程案例对管线防护措施的优缺点进行了分析;最后,指出了海底水平管线悬空治理可以向生态调整的方向发展。

Free-span is one of the main causes of submarine pipeline accidents.This paper reviews the research and practice of submarine horizontal pipeline suspension systematically from the aspects of suspension mechanism, scour calculation, vortex-induced vibration, dynamic response and dynamic adjustment methods. Firstly, the overhang mechanism of submarine horizontal pipeline and the calculation formula of scour overhang are summarized.Then the present paper summarizes the research on scour suspension and dynamic response in recent years and points out the shortcomings and the direction of future efforts. In addition, it summarizes the dynamic adjustment method of submarine horizontal pipeline, and analyzes the advantages and disadvantages of the adjustment method through specific engineering cases. Finally, it points out that the submarine horizontal pipeline suspension control can be developed in the direction of ecological adjustment.