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Research and application of drainage parameters for gas accumulation zone in overlying strata of goaf area
Overlying stratus in goaf area Annular fissure circle Gas drainage Parameters
2012/3/28
While coal seam is being mined, an annular fissure circle with gas accumulation will be formed in the fissure zone as a result of desorption, dissipation and permeation of gas in the goaf area and ove...