摘要
随着燃气管道的铺设里程逐年增加,以及穿跨越等技术的广泛应用,水下钢管埋深探测难度增大,埋地钢管的防腐层破损问题日益突出。针对现有问题,本文亟须分析水下钢管埋深检测技术的适用性和有效性,并研究埋地钢管防腐层破损点的检测方法及典型破损原因,提出相应的防护措施。文章采用电磁-声呐法,结合电缆回路连线方式,探测水下钢管埋深,并通过开挖验证该方法的有效性;结合实际案例分析了直流杂散干扰和交直流杂散干扰等因素引起的防腐层破损,提出了加强阴极保护、定期检验和监测杂散电流等防护措施,确保埋地管道的安全运行。
With the annual increase in the laying mileage of gas pipelines and the wide application of technologies such as crossing and aerial crossing,the difficulty of detecting the burial depth of underwater steel pipes has increased,and the problem of damage to the anti-corrosion coating of buried steel pipes has become increasingly prominent.In view of the existing problems,the paper urgently needs to analyze the applicability and effectiveness of the burial depth detection technology for underwater steel pipes,and studying the detection methods for the damage points of the anti-corrosion coating of buried steel pipes and the typical causes of damage,thereby proposing corresponding protective measures.The paper adopts the electromagnetic-sonar method and combines the cable loop connection mode to detect the burial depth of underwater steel pipes.Finally,the effectiveness of this method is verified through excavation.Based on practical cases,it analyzes the damage to the anti-corrosion coating caused by factors such as direct current(DC)stray interference and alternating current(AC)/DC stray interference.Based on this situation,protective measures such as strengthening cathodic protection,regular inspection,and monitoring of stray current are proposed to ensure the safe operation of buried pipelines.
作者
金斌戈
刘明威
杨宇俊
王飞
黄泽
JIN Binge;LIU Mingwei;YANG Yujun;WANG Fei;HUANG Ze(Hangzhou Special Equipment Inspection&Science Research Institute,Hangzhou 310051)
出处
《中国特种设备安全》
2026年第1期52-57,76,共7页
China Special Equipment Safety
基金
浙江省市场监督管理局科技计划项目(LY2026021)
国家市场监督管理总局科技计划项目(2023MK164)。
关键词
水下钢管
埋深探测
埋地钢管
防腐层破损点
阴极保护
Underwater steel pipe
Burial depth detection
Buried steel pipeline
Damaged points of the anti-corrosion coating
Cathodic protection
