对聚乙烯管道关键部位和高风险段监测方法的研究对管道安全运行和管道周边人身安全有重要意义。对国内外管道检测技术进行汇总并根据其特点进行分类，将检测方法分为：电磁检测、声波检测、光波检测、压力检测、管道机器人和直接评价。并对各自优缺点进行简要分析，并根据城镇聚乙烯燃气管网的特点，建立了城镇聚乙烯燃气管道关键部位及高风险段检测体系，以期为降低城镇燃气管网事故发生概率提供一定的理论基础。%Research on safety monitoring methods of key parts and high-risk segments of city gas polyethylene pipe has great significance to safe running of the pipe and personal safety. In this paper, pipeline inspection technologies at home and abroad were summarized and classified according to their characteristics. The detection methods were divided into electromagnetic testing, acoustic detection, lightwave detection, pressure detection, pipeline robot and direct evaluation. And their advantages and disadvantages were analyzed. According to the characteristics of urban polyethylene gas pipe network, the detection system of key parts and high-risk segment of town polyethylene gas pipeline was established, which could provide a theoretical basis for reducing the urban gas pipeline accident probability.
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