摘要
通过数值模拟对载流长直金属管道的电磁响应特征进行了讨论,分析了电流强度和管道埋深对响应信号幅值的影响。通过场地试验,对直连法中的单端直连法与双端直连法的探测效果进行了对比。结果表明,在相同增益情况下,双端直连法的探测效果明显优于单端直连法的;远离充电点时,改变增益参数并不能从本质上增强单端直连法信号的强度。通过工程应用,讨论了感应法和直连法在隐蔽金属管道探测中联合使用的思路,总结了技术路线,实现了隐蔽管道的位置探测。
In this paper, the response signal of current-carrying long straight metal pipeline is discussed by numerical simulation, and the influence of current intense and pipeline buried depth on the amplitude of the response signal is analyzed. Then, through field experiment, the detection effects of single-end connection method and double-end connection method are compared. The results show that, under the same gain, the detection effect of double-end connection method is obviously better than single-end connection one. When it is far away from the charging point, the change of gain parameter cannot change the weak signal characteristic of single-end direct connection method in nature. Through engineering application, this paper discusses the idea of combining induction method and direct connection method in the detection of hidden metal pipeline, summarizes the technical route, and realizes the location detection of hidden pipeline.
作者
周江
潘剑伟
吕勇
杨洲
张成丽
ZHOU Jiang;PAN Jianwei;LV Yong;YANG Zhou;ZHANG Chengli(College of Resources and Environmental Engineering,Guizhou University,Guiyang 550025,China;Southwest Guizhou Buyi&Miao Autonomous Prefecture Design Institute Co.,Ltd.,Xingyi 562400,China)
出处
《无损检测》
CAS
2021年第8期1-4,30,共5页
Nondestructive Testing
基金
贵州省科技计划项目([2020]1Y173)。
关键词
金属管道探测
盲探
感应法
直连法
metal pipeline detection
blind exploration
induction method
direct connection method
