Mechanism and effect factors of gas and coal delay outburst in uncovering coal seam in cross-cut

Based on the gas and coal outburst mechanism, the mechanism and effect factors of the gas and coal delay outburst in uncovering coal seam in cross-cut are analyzed detailedly, its process is also described from time and space, and its cause is expatiated from rheology. From the accidents causes and theoretical analysis, it is show that the gas and coal delay outburst is the combined action of the geological factors and non-geological factors and there are two phenomena in gas and coal delay outburst. Finally, the action of factors in the delay outburst is expatiated detailedly. The results can offer theoretical and technological support for fast uncovering coal seam in cross-cut.