Gas Storage Rule And Outburst Prediction In Liziya Minefield

Coal and gas outburst occurred in the process of excavating coal underground is an extremely complex phenomenon of gas dynamic,is one of the serious underground disasters. The regional forecast of coal and gas outburst has great significance.On the basis of previous studies, this article states the formation and evolution of Chuandong fold belt in detail and studies the reasons of serious coal and gas outburst in East Sichuan. This article also studies control rule of geological structure to the coal seam gas in Huayingshan mining area and gas storage rule in Liziya minefield. Based on the content of finding out the gas storage rule, this article predicts gas content and distribution of tectonic coal. This article studies about characteristics and influence factors of coal and gas outburst in Liziya minefield, analyzes influence factors of coal and gas outburst by use of enhanced fussy AHP and evaluates the calculation results. Liziya minefield was divided into coal and gas outburst dangerous area,serious dangerous area and safe area, the accuracy of the forecasts of gas disaster was improved.