As China’s blood vessels,oil and gas pipeline plays a very important role in the national economy,and it is an important part of the lifeline transportation in China. However,with the increase of transport lines,the problems in the long oil and gas pipelines are gradually exposed.%油气长输管道作为中国的血脉，在国民经济中占有非常重要的地位，是我国生命线运输的重要组成部分。但是随着运输线路的增加，油气长运输管道所存在的问题也逐渐开始显露出来。
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