基于抛石保护法的施工过程对海底电缆的力学冲击分析

Analysis on the Mechanical Shock of Submarine Cables During the Construction Process of Stone-falling Protection Method

中国南方电网责任有限公司联合海南电网投资并建设了我国第一个海南跨海联网工程,以实现我国远距离、大功率传输电能的宏伟战略目标和解决当地人民日益增长的供电需求.但是,海底电缆(海缆)常常由于复杂的海洋环境和各种外在的人文因素而常遭受到各种类型和不同程度的损伤以及破坏.针对海底电缆不同的防护方法,主要基于抛石保护法的施工过程对海底电缆造成的力学冲击进行仿真分析,得到在施工过程中由于不同的块石粒径和不同的抛石层堆积厚度对海底电缆造成的冲击力和侧压力变化规律,由此推出在保证海缆机械性能和力学性能的前提下,实际施工过程当中最优的石块粒径和堆积层厚度.对同类或相近工程的施工提供一定的指导价值和意义.

China Southern Power Grid Liability Co.,Ltd has invested and built the first Hainan Trans-Sea networking project in China,in order to realize the grand strategic target of long-distance and high-power transmission of power and to solve the increasing demand of the local people.However,submarine cables are often subjected to various types and varying degrees of damage and destruction due to complex marine environments and various external human factors.For different protection methods of submarine cables,this paper is mainly based on the simulation analysis of the mechanical impact of the submarine cable caused by the construction process of the Riprap protection method,and obtains the change law of the impact force and the lateral pressure caused by the different stone size and the stacking thickness of different riprap layers in the construction process,It provides some guiding value and significance to the construction of similar or similar projects.