Study on sensitive index of local outburst danger prediction in outburst mining area of Guizhou

In order to investigate the sensitivity of the local outburst prediction and forecast index applied in Guizhou,based on the investigation of the typical outburst mine witin the mining are.the three ratio method and the ouburst danger relevant analysis method were appied to the study on the sen stity of the predition and forecast index for the outburst mining area in Guzhou.The results showed that in the indexes applied to the predicion and forecast in Guizhouthe drling cutings gas desoption idex was the most sen stive,the intra elocity of the borehole gas emnission was the second and theadrling cutings cuanity and the cutings temperturediference senstit was poo.n the cutings gas desoption index,K1 were completed more senstive in Anshun,Southwest Guizhou and Liupanshui Area andh2indexin Bijie and Zunyi Areas were more sensitive.Due to the gas desorption index of the trll cutings could not refiect the geostress facor and the sensitvity of the drling .uttngs was poor:the paper proposed that the intral velocity of the boreholegas emiss ion and the driing cutings gas desorption index would be appid to predict and forecast the local outburst danger in Guizhou.