Application of short wall fully caving coal mining method in Shendong coal mine area

According to the theory of seepage and mechanics and the characteristics of gas mitigation during the large area roof caving in goaf under the fast and high-duty mining activities,the goaf was a continuous seepage spatial field,the transport mechanisms of the gas were dispersion,diffusion in fact,ventilation transits from turbulence in working face to laminar deep goaf.