河南理工大学学报（自然科学版）2016，Vol.35Issue(6)：796-801,6.DOI:10.16186/j.cnki.1673-9787.2016.06.008
瞬变电磁法探测盲区深度减少和探测深度增加技术
The technology of reduce the detection blind area depth andincrease the detection depth of transient electromagnetic method
摘要
Abstract
In order to solve the problem that the detection blind area and the detection depth of the transient electromagnetic method to detect the underground,according to the working principle of the transient electromagnetic method,the technology of reduce the detection blind area depth and increase the detection depth of transient electromagnetic method is studied.According to the principle of least square method,it is used the Matlab to fit the induction potential decay curves on the basis of the early signal,then dealing with the software of YCS40 (A) to stack,it can get the ideal results after forth fitting that can effectively reduce the blind area depth to 18 m.Compared and analyzed the coil size,emission frequency and depth coefficient of transient electromagnetic instrument,it found that using the 2 m transmitter coil with high current,adjusting the minimum transmission frequency and increaseing deep conversion coefficient can increase the TEM detection depth.The results can guide the application of the transient electromagnetic method,and has the significance to ensure safe production of coal mining enterprises.关键词
瞬变电磁法/探测盲区/探测深度/抽采半径Key words
transient electromagnetic method/blind area/detection depth/extraction radius分类
矿业与冶金引用本文复制引用
陈魁奎,王心义..瞬变电磁法探测盲区深度减少和探测深度增加技术[J].河南理工大学学报（自然科学版）,2016,35(6):796-801,6.基金项目
国家自然科学基金资助项目(41272250) （41272250）
河南省高校科技创新团队支持计划项目(15IRTSTHN027) （15IRTSTHN027）
