Volume 43 Issue 4
Oct.  2021
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GUO Xiaojie, LEI Dongji, ZHANG Yugui. Electrical experiment and its characteristics of tectonic coal[J]. COAL GEOLOGY & EXPLORATION, 2015, 43(4): 102-105. DOI: 10.3969/j.issn.1001-1986.2015.04.022
Citation: GUO Xiaojie, LEI Dongji, ZHANG Yugui. Electrical experiment and its characteristics of tectonic coal[J]. COAL GEOLOGY & EXPLORATION, 2015, 43(4): 102-105. DOI: 10.3969/j.issn.1001-1986.2015.04.022
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Electrical experiment and its characteristics of tectonic coal

  • 1. State Key Laboratory Cultivation Base for Gas Geology and Gas Control, Henan Polytechnic University, Jiaozuo 454000, China;

  • 2. Collaborative Innovation Center of Central Plains Economic Region for Coalbed/Shale Gas, Jiaozuo 454000, China

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  • Received Date: March 18, 2014
  • Available Online: October 21, 2021
    Graphical Abstract
    • Abstract
  • Impedance amplitude measurement of six metamorphic kinds of tectonic coal was conducted under normal pressure and temperature. And then some phenomena were concluded as follows:amplitude spectrum of coal of different kinds respectively present different characteristics. In the test frequency range of 100 Hz~100 kHz, Z-f curves of coals all show monotone decrease. Through fitting of Z-M of tectonic coal, we can draw relevant formula, and use coal to validate, as the result, the edge band is obtained. In order to try to use coal and rock electrical response characteristic differences in frequency domain to reflect different conductive mechanisms and structure models of different coals and rocks, and then to use electricity exploration to prospect its compositions and structures, theoretical and experimental basis have been provided.
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