COAL ENGINEERING ›› 2016, Vol. 48 ›› Issue (1): 103-106.doi: 10.11799/ce201601030

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Numerical research of steep coal seam mining coal pillar width under the goaf in the extremely complex area

  

  • Received:2015-07-28 Revised:2015-08-23 Online:2016-01-10 Published:2016-02-01

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