This paper introduces the safety problems and trend of current safety precaution technology development of oil -gas pipelines that are widely studied and applied nowadays,and tries to make a comparison among these methods.%归纳了油气管道遇到的安全问题、目前广泛研究和使用的安全预警技术及其发展趋势，分析比较了各种方法的优缺点和适用条件。
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