Volume 46 Issue 4
Aug.  2018
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SU Chao, GUO Heng, HOU Yanwei, MA Bingzhen. CSAMT static correction and its application in detection of coal mine goaf[J]. COAL GEOLOGY & EXPLORATION, 2018, 46(4): 168-173. DOI: 10.3969/j.issn.1001-1986.2018.04.027
Citation: SU Chao, GUO Heng, HOU Yanwei, MA Bingzhen. CSAMT static correction and its application in detection of coal mine goaf[J]. COAL GEOLOGY & EXPLORATION, 2018, 46(4): 168-173. DOI: 10.3969/j.issn.1001-1986.2018.04.027
shu

CSAMT static correction and its application in detection of coal mine goaf

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

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National Key R&D Program of China(2017YFC0804105)

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  • Received Date: December 14, 2017
  • Published Date: August 24, 2018
    Graphical Abstract
    • Abstract
  • Controlled source audio magnetotelluric(CSAMT) is an effective method for detecting coal mine goaf. As static effects of CSAMT is susceptible to produce due to the influence of shallow inhomogeneity, CSAMT data can be corrected by using the curve-shift method based on the late apparent resistivity data of TEM. It can eliminate the static effect and ensure true resistivity response, and improve the accuracy of data interpretation. Taking the forward model as an example, the effectiveness of this method was verified. This method was applied to detect the goaf in a coal mine in Shanxi. Results of inversion by corrected data coincided well the known data. The theory and practice prove that the correction method is feasible and has good detection effect.
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    • References (21)
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