复杂海洋地质对海底光缆工程的影响研究

Research on the Influence of Complicated Marine Geology on Submarine Cable Engineering

为更好地进行海底光缆路由勘测、规划,获取更精确的铺设施工关键参数,介绍了海洋灾害区划方法在勘测、规划中的作用,海洋地质分析对光缆敷设施工关键参数的影响及海床底质与埋设施工方法选择的关系,强调海洋地质分析对光缆勘测、施工有效性、准确性和安全性的影响;重点指出了引入海洋灾害区划方法可以有效对路由上的不同灾害特征进行更加完备的勘测;同时,也指出了针对不同灾害地质区的精准勘测可以有效提高敷设过程中余量控制计算的准确度,能够防止光缆出现悬空导致损伤;最后,结合基于海床底质特性变化的埋设方法选择方式与传统基于水深和海底光缆保护要求的埋设方法选择方式,可以有效防止因埋设失效而导致施工意外中断损伤海缆的问题.

In order to better carry out submarine optical cable routing survey and planning,and obtain more accurate key parameters of cable laying construction,the role of marine disaster zoning method in survey and planning,and the influence of marine geological analysis on key parameters of optical cable laying construction and the relationship between seabed substrate and buried construction method selection are introduced.The impact of marine geological analysis on optical cable survey,construction effectiveness,accuracy and safety is emphasized;it is pointed out that based on the marine disaster zoning method,a more complete survey can be carried out on the disaster characteristics that submarine optical cable routes pass through;at the same time,it is also pointed out that accurate surveys for different geological hazards can effectively improve the calculation accuracy of margin control in the laying process of cables,prevent optical cables from being suspended and cause damage;finally,combining the selection method of burial method based on the change of seabed substrate characteristics with the traditional selection method of burial method based on water depth and submarine cable protection requirements can effectively prevent the failure of burial,which could result in accidental interruption of construction and damage to submarine cables.