Volume 45 Issue 4
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CHEN Mingsheng, XU Yangcheng. Suitable algorithm of transient electromagnetic turn-off effects and whole-stage apparent resistivity[J]. COAL GEOLOGY & EXPLORATION, 2017, 45(4): 131-134. DOI: 10.3969/j.issn.1001-1986.2017.04.023
Citation: CHEN Mingsheng, XU Yangcheng. Suitable algorithm of transient electromagnetic turn-off effects and whole-stage apparent resistivity[J]. COAL GEOLOGY & EXPLORATION, 2017, 45(4): 131-134. DOI: 10.3969/j.issn.1001-1986.2017.04.023
shu

Suitable algorithm of transient electromagnetic turn-off effects and whole-stage apparent resistivity

  • 1. Xi'an Research Institute, China Coal Technology and Engineering Group Corp., Xi'an 710077, China;

  • 2. Chongqing Research Institute of China Coal Techonogy & Engieering Group Corp., Chongqing 400039, China

Funds: 

National Natural Science Foundation of China(41374150)

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  • Received Date: August 05, 2016
  • Published Date: August 24, 2017
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    • Abstract
  • Firstly the transient electromagnetic(TEM) field convolution was given, and change rate of turn-off current is taken as a impact function, the field component of vertical step pulse excitation as the input signal. The convolution result is TEM response of arbitrary shape turn-off current. The current excitation pulse is regarded as a superposition of many vertical step function. The transient electromagnetic response of arbitrary current pulse excitation is induced by the superposition of step function response. When the measured value of TEM field and the turn-off current form are known, whole-stage apparent resistivity can be calculated by the method of programming. The paper gives two examples on TEM vertical magnetic field of slope turn-off current excitation of electric dipole source, a response of uniform half-space and all-time apparent resistivity, a response to the three K-type geoelectric section and whole-stage apparent resistivity.
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    • References (6)
  • [1]
    牛之琏. 时间域电磁法原理[M]. 长沙:中南大学出版社,2007.
    [2]
    白登海. 瞬变电磁法中两种关断电流对响应函数的影响及其应对策略[J]. 地震地质,2001,23(2):245-251.

    BAI Denghai. The effect of two types of turn off current on TEM response function and coping strategies[J]. Seismic Geology,2001,23(2):245-251.
    [3]
    孙天财,付志红,谢品芳. 斜阶跃场源关断时间对测量结果的影响及校正研究[J]. 工程地球物理学报,2008,5(3):287-293.

    SUN Tiancai,FU Zhihong,XIE Pinfang. Correction of ramp function turn-off effect on TEM response[J]. Engineering Geophysics,2008,5(3):287-293.
    [4]
    杨云见,王绪本,何展翔. 考虑关断时间效应的瞬变电磁一维反演[J]. 物探与化探,2005,29(3):246-251.

    YANG Yunjian,WANG Xuben,HE Zhanxiang. Transient electromagnetic one dimensional inversion to considering the effect of turn-off time[J]. Geophysical and Geochemical Exploration,2005,29(3):246-251.
    [5]
    杨云见,王绪本,何展翔. 瞬变电磁法中的斜阶跃波效应及常规的几种校正方法分析[J]. 物探化探计算技术,2006,28(2):129-132.

    YANG Yunjian,WANG Xuben,HE Zhanxiang. The discussion of ramp time effect and conventional several correction method of transient electromagnetic method[J]. Computing Techniques for Geophysical and Geochemical Exploration,2006,28(2):129-132.
    [6]
    陈明生,田小波. 电偶源瞬变电磁测深研究(五)-实测感应电压转换成垂直磁场[J]. 煤田地质与勘探,1999,27(5):63-65.

    CHEN Mingsheng,TIAN Xiaobo. Electric dipole source TEM sounding(V)-The measured induced electromotive force is converted into a vertical magnetic field[J]. Coal Geology & Exploration,1999,27(5):63-65.
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