植物根系对城镇燃气埋地聚乙烯管性能的影响  

Effects of Plant Roots on Properties of Buried Polyethylene Gas Pipelines in Urban Areas

作　　者：范成龙 徐火力 陈国培 伏喜斌 汤彬坤 FAN Chenglong;XU Huoli;CHEN Guopei;FU Xibin;TANG Binkun(Xiamen Special Equipment Inspection Institute,Xiamen 361004,China;School of Mechanical Engineering and Automation,Fuzhou University,Fuzhou 350108,China;Xiamen China Resources Gas Co.,Ltd.,Xiamen 361004,China)

机构地区：[1]厦门市特种设备检验检测院,厦门361004 [2]福州大学机械工程及自动化学院,福州350108 [3]厦门华润燃气有限公司,厦门361004

出　　处：《腐蚀与防护》2025年第2期95-98,共4页Corrosion & Protection

基　　金：福建省市场监督管理局科技计划项目(FJMS2021030);厦门市市场监督管理局科技计划项目(XMSJ202107)。

摘　　要：在城镇燃气埋地聚乙烯管道定期检验中发现,植物根系缠绕导致管道表面出现细小密集黑丝痕迹,从外观难以判断植物根系分泌物对管道本体造成的伤害。对问题管道取样测量壁厚,对痕迹部位进行渗透检测,对管道内外表面进行红外光谱测试。结果表明:植物根系分泌物虽然影响了管道本体的颜色,但管道的壁厚、致密性以及成分等都没有变化,因此植物根系分泌物对管道的安全性影响不大,但在后续定检中还应关注根系缠绕导致的管道拉伸变形问题。In the regular inspection of urban gas buried polyethylene pipelines,it was found that the entanglement of plant roots led to small and dense black silk marks on the surface of pipes.It was difficult to judge the damage of plant root exudates to the pipe bodies from the appearance.After sampling the problem pipes,the wall thicknesses were measured,the parts with trace were examined by penetrant testing,and the internal and external surfaces of the pipes were tested with infrared spectrum.The results show that although plant root exudates affected the color of the pipe bodies,but they did not change the thicknesses,density and composition of the pipes,so they had little effect on the safety of the pipes.However,in subsequent inspections,attention should also be paid to the problem of pipe tensile deformation caused by root entanglement.

关 键 词：埋地燃气管道 聚乙烯 植物根系 缠绕与影响 

分 类 号：TQ320.1[化学工程—合成树脂塑料工业]