长输管道系统是一个复杂的系统工程,任何一处出现问题都将影响整个系统的运行。近年来,我国油气管道事业进入蓬勃发展时期,一方面,油气管道长度日益增长,油气管道系统的安全问题也日益严峻;另一方面由于油气管道服役时间长,使管道安全受到严重威胁。因此,研究管道风险管理,探索降低油气管道事故发生概率,成为油气管道管理的当务之急。同时减少事故发生后 Long-distance pipeline system is a complex system engineering, any one problem will affect the operation of the entire system. In recent years, the cause of China’s oil and gas pipelines has been booming. On the one hand, the length of oil and gas pipelines is growing day by day, and the safety of oil and gas pipeline systems is also becoming more and more serious. On the other hand, due to the long service life of oil and gas pipelines, pipeline safety is seriously threatened. Therefore, it is imperative to study pipeline risk management and explore ways to reduce the probability of oil and gas pipeline accidents. At the same time reduce the accident