Study on Predicted Indexex of Coal and Gas Outburst Disaster in Donglin Mine

According to the insufficient study on the predicted indexes of coal and gas outburst disaster in Donglin Mine, the information collection and analysis, the indoor study, the site investigation and other means were applied to collect and analyze the torsion fold structure features and the coal and gas outburst conditions over the years in Donglin Mine.The acoustic emission technology and drilling cutting index method were applied to study the prediction technology of the coal and gas outbur st disaster in Donglin Mine.The sensitive index and the critical value of the coal and gas were set up.The critical value of the drilling cuttings desorption index K1 was 0. 2 mL/ (g min1/2) , the critical value of the drilling cuttings quantity S was 15 kg/m and the critical value of the auxiliary acoustic emission energy was 20.