Effect of Premining on Hard Roof Distress Behavior: A Case Study
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DOI: 10.1007/s00603-018-1657-0
Abstract: Considering the complex geological conditions of mining in the fully mechanized 828 working face of the Qingdong Coal Mine, a mining plan was developed for premining the upper No. 7 coal seam to control the… read more here.
Keywords: coal; coal seam; hard roof; premining coal ... See more keywords