Journal of Mining & Safety Engineering ›› 2017, Vol. 34 ›› Issue (1): 85-90.

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Overburden strata movement and fissure evolution in lower protective layer in Jincheng mining district

  

  • Received:2015-11-20 Online:2017-01-11 Published:2017-01-06

Key words:  ,  ,  , lower protective seam;strata movement;two zones of overburden strata;fissure evolution;deep displacement meter