Influence of Ventilation on Gas Emission in No pillar Mining

Abstract

The emergence of pillar-free pillar technology instead of coal pillar technology has raised new requirements for safe production of coal mine. Based on the analysis of gas source, the effects of total pressure change, air flow and main fan stop on gas emission were expounded respectively. At the same time, a concrete analysis was made for the non-pillar mining. It was pointed out that air leakage is the influential factor of gas emission of the key factors.