Journal of Mining & Safety Engineering ›› 2017, Vol. 34 ›› Issue (2): 228-234.

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Technology of gob-side entry retaining with advance standing props

  

  • Received:2015-09-16 Online:2017-03-23 Published:2017-03-29

Key words: gob-side entry retaining, wider roadway, sandstone filled steel prop, reducing span