Slow-release Coal Uncovering in Cross-Cut New Technology by Expanding Agent

Through researching expansibility of expanding agent, impact area of static blasting and the effect rule of coal and rock stress and gas release uncovering coal in cross-cut, the paper researches change rules of gas pressure, gas gushing amount and coal stress changes in slow-release coal uncovering according to gas seepage mechanism uncovering coal in cross-cut, and studies slow-release coal uncovering mechanism by expanding agent.