Journal of Mining and Safety Engineering ›› 2022, Vol. 39 ›› Issue (1): 118-125.doi: 10.13545 /j.cnki.jmse.2020.0604

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Stability  of coal pillars in  room-and-pillar goaf with opposite mining  under ultra-close shallow goafs

  

  • Online:2022-01-15 Published:2022-02-18