Coal Engineering ›› 2023, Vol. 55 ›› Issue (4): 40-44.doi: 10.11799/ce202304008

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Safe and Rapid Roadway Heading Technology of High-gas Mines Based on Large-diameter Long Boreholes

  

  • Received:2021-12-23 Revised:2022-03-30 Online:2023-04-20 Published:2023-06-05

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