摘要
对应用瞬变电磁法进行金属管道腐蚀检测作了理论上的初步研究,首先将实际问题简化为等效柱体的全空间问题,然后利用柱体在谐变场中的响应公式,由正余弦变换实现了频率域正演到时间域的转换,最后通过对模拟结果的分析,提出了简洁而又有效的评价管道质量的方法。经由中国冶金地质勘查工程总局地球物理勘查院的施工实验,进一步验证了方法的可行性。
In this paper, we present a preliminary study of TEM application to the metal pipeline corrosion detecting. Firstly, the actual problem is simplified as a whole space problem of the equivalent column. Then, according to the response formulas of the column in harmonious fields, the conversion of the result from frequency domain to time domain by sine or cosine transform is realized. Finally, on the basis of the analysis of the simulation data, a terse and effective method of evaluation the quality of the metal pipeline is brought forward.
出处
《物探化探计算技术》
CAS
CSCD
2005年第1期29-33,98,共5页
Computing Techniques For Geophysical and Geochemical Exploration
基金
国家自然科学基金项目(40074036)
关键词
瞬变电磁法
地球物理勘查
正演
时间域
地质勘查
全空间
频率域
中国
理论
初探
TEM
metal pipeline corrosion detecting
equivalent parameters
sine or cosine transform
metal pipeline time constant
