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ZHANG Yuzhu. Determination of working face prediction indicators based on outburst feature of coal seam[J]. Safety in Coal Mines, 2021, 52(1): 152-156.
Citation: ZHANG Yuzhu. Determination of working face prediction indicators based on outburst feature of coal seam[J]. Safety in Coal Mines, 2021, 52(1): 152-156.
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Determination of working face prediction indicators based on outburst feature of coal seam

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  • Published Date: January 19, 2021
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    • Abstract
  • In order to accurately determine the sensitive index and reasonable critical value of outburst prediction in the working face of outburst coal seam, taking 6# coal seam of Sijichun Coal Mine as an example, by summarizing the characteristics of coal and gas outburst in 6# coal seam of the mine and adjacent areas, the sensitivity analysis standard of outburst prediction index of 6# coal seam was established. Based on the sensitivity inspection standard, the sensitivity of the ratio of outburst prediction index of each working face was compared, and the analytical index of drilling cuttings gas and auxiliary prediction index of drilling cuttings of coal seam were determined. By using laboratory test and historical data fitting calculation, field investigation and modification, and expanding the three-step progressive method, the critical value of drilling cuttings gas analysis index, the sensitive indicator for outburst prediction of 6# coal seam, is determined to be 0.51 mL/(g·m1/2), and the critical value of drilling cuttings, the auxiliary indicator, is 6 kg/m.
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    • References (15)
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