北京市燃气管材失效与土壤腐蚀性微生物特征研究  

Failure Characteristics of Gas Pipelines andCorrosion-induced Microorganisms of Soils in Beijing

作　　者：万云洋[1] 武旻 徐得甲 孙桂勇 WAN Yunyang;WU Min;XU Dejia;SUN Guiyong(Research Centre for Geomicrobial Resources and Application,State Key Laboratory of Petroleum Resources and Prospecting,Beijing Key Laboratory of Oil and Gas Pollution Control,Unconventional Petroleum Research Institute,China University of Petroleum,Beijing 102249,China;Beijing Gas Changping Co.,Ltd.,Beijing 102200,China)

机构地区：[1]中国石油大学(北京)地层微生物资源与应用研究中心油气资源与探测国家重点实验室油气污染防治北京市重点实验室非常规油气科学技术研究院,北京102249 [2]北京燃气昌平有限公司,北京102200

出　　处：《石油化工腐蚀与防护》2021年第2期1-6,共6页Corrosion & Protection In Petrochemical Industry

基　　金：国家自然科学基金(41373086);科技新星与领军人才培养计划(Z161100004916033);国家科技重大专项(2016ZX05050011,2016ZX06040002);北京市青年英才计划(YETP0670);中国石油天然气集团有限公司-中国石油大学(北京)战略合作科技专项(ZLZX2020010805,ZLZX2020020405)。

摘　　要：对2015至2016年北京市燃气管道失效数量进行统计分析,并研究土壤类型及其腐蚀性微生物与燃气管道失效的相关性。研究结果表明:两年内北京市燃气管道失效数量达到1518次,外腐蚀为失效主因,管道腐蚀失效主要集中在管道服役7~26 a;管道腐蚀失效频率呈现出由中心地区向周边地区递减的趋势,与人口密度也存在正相关性;管道腐蚀失效数量与土壤类型及其腐蚀性微生物特征密切相关,在潮土及褐土中,腐蚀性微生物数量较多,管道失效数量也较多,而在棕壤中,腐蚀性微生物数量较少,管道失效数量也较少。人类活动对管道微生物腐蚀具有重大影响,人体、土壤和管道三者中的微生物群落高度重合。秋季燃气管道失效数量最多,这与微生物受季节(降水及温度)影响有关,此时的腐蚀性微生物数量也最多。The number of gas pipeline failures in Beijing from 2015 to 2016 was statistically analyzed,and the correlation between soil types and corrosion-induced microorganisms on gas pipeline failures was discussed.The results showed the number of gas pipeline failures in Beijing reached 1518 in two years;external corrosion was the chief cause of failure and corrosion failure mainly occurred in the 7th to 26th year of pipeline service.The frequency of pipeline corrosion failure showed a decreasing trend from the central area to the surrounding area,and had a positive correlation with the population density.The number of corrosion failure was closely related to soil types and microbial characteristics.In Chaotu(similar to Entisol)and Hetu(similar to cinnamon soil),there were more corrosion-induced microorganisms and more pipeline failures;while in brown soil,there were less corrosion-induced microorganisms and less pipeline failures.Human activities had great influence on the microbial corrosion of pipelines and the microbial communities in human body,soil and pipeline were highly coincident.The number of gas pipeline failure was the highest in autumn because the corrosion-induced microorganisms in the soil in autumn were more active and corrosive.

关 键 词：北京 燃气管材 失效 土壤腐蚀 微生物 

分 类 号：TU996.7[建筑科学—供热、供燃气、通风及空调工程]