拖网捕鱼作业对水下M型跨接管安全的影响及评估方法

Influence of Trawl Fishing Operation on Safety of Underwater M-shape Jumper and Its Evaluation Method

跨接管是连接水下管线终端、水下管汇和采油(气)树等水下结构物的重要管道系统。拖网捕鱼作业下,渔网极有可能与水下跨接管发生钩挂导致对跨接管结构产生破坏。以南海某M型跨接管为例,进行跨接管在拖网钩挂下的受力分析和安全评估,并提出保护方案。

Jumper is an important pipeline system connecting underwater pipeline terminal,manifold,oil(gas)tree and so on.Under trawl fishing operation,the trawl net is likely to be hooked with the jumper,resulting in damage to jumper structure.Taking an M-shape jumper in the South China Sea as an example,the force analysis and safety assessment of the jumper under trawl hook are carried out,and the protection scheme is put forward.