COAL ENGINEERING ›› 2016, Vol. 48 ›› Issue (4): 9-12.doi: 10.11799/ce201604003

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Study on RoadwayLayout and Surpport for Ultra-close Coal Seams

  

  • Received:2015-11-03 Revised:2015-11-13 Online:2016-04-10 Published:2016-04-18

Abstract: Combined with the geological conditions of thefourth mine of Pingdingshan Coal Group,reasonable position of roadway for lower ofultra-close coal seam is studied by numerical simulation in this paper.The results show that the deformation of surrounding rock of roadway decreases with the increase of the inner stagger distance under different layers. The reasonable inner stagger distance of roadway is 30 m.According tothe surrounding rock control countermeasures of actively division support,the paper proposes a division support scheme of combined support withbolt belt wire cable shedwith space of coal layers as indicators.The field practiceshows that combined supporthas well controlled the deformation of surrounding rock.

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