Coal Engineering ›› 2020, Vol. 52 ›› Issue (7): 32-36.doi: 10.11799/ce202007008

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Application and Research of the Main Pingyu Pass of Wenjiaba No. 1 Mine through Extra Large Karst Cave Engineering

  

  • Received:2020-03-19 Revised:2020-05-13 Online:2020-07-15 Published:2020-08-21

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