Analysis on Factors Affacting Coal and Gas Outburst in Pinghu Coal Mine

In this paper, study was carried out on the control features of the regional and mine field structure based on the actual coal-bed gas geological data and by using the coal-bed gas geology theory; statistical analysis on the outburst data was made and the characteristics of coal and gas outburst in Pinghu Coal Mine were summarized; analysis was carried out on the influence and control effect of the regional evolution, the occurrence depth of coal seams, the lithological characters of roof anf floor rock, the coal seam thickness and its change, the nature of coal, the mine structure and mining factors upon coal and gas outburst. The analyzing results showed that the lithological characters of roof anf floor rock, the coal seam thickness and its change and the mining factors had significant influence on coal and gas outburst, and the fault structure controlled the occurrence and distribution rule of outburst. Therefore, the dangerios regions of outburst can be divided according to the coal-bed gas geological conditions, thus better directing the prevention work of coal and gas in a coal mine and providing an analyzing method for regional coal and gas outburst control in coal mines with similar conditions.