The Drainage Horizon Determination of High Directional Long Borehole and Gas Control Effect Analysis
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DOI: 10.1155/2021/3370170
Abstract: In order to effectively solve the problem of gas concentration overrun in the upper corner of goaf and tailentry during the mining of panel 9303 in Anshun Coal Mine, based on the advantages of controllable… read more here.
Keywords: directional long; gas; high directional; drainage ... See more keywords