But submarine pipeline often loses its function under abominable working conditions because of corrosion,scour,mechanical damage etc. The security of submarine pipeline has been the question that people have paid close attention to all the time.

• 但恶劣的工作条件使海底管道经常因腐蚀、波流冲刷、机械破坏等原因而失效；海底管道的安全一直是人们关注的问题.