Rapid identification method and its application of outburst danger in driving face based on gas emission
Aiming at the problems of long time-consuming and discontinuous prediction of contact outburst hazard prediction methods such as drilling cuttings index of driving face,the outburst hazard identification method was put forward based on gas emission charac-teristics of driving face and the outburst hazard identification index system was established,including four characteristic indexes:gas e-mission,gas desorption,gas fluctuation and gas trend.On the basis of identification rate,identification accuracy,identification false a-larm rate and identification missing alarm rate,the rapid identification technology of outburst hazard was studied.Then,the rapid identi-fication system of outburst hazard was developed.The above results were widely used in the outburst mines of Xishan Coal and Electrici-ty Company.The results show that the rapid identification system of outburst danger can quickly,continuously and accurately identify the outburst danger of driving face,and has the ability to identify typical dynamic phenomena in advance.The identification accuracy reached 100％,while saving nearly 30％of the predicted drilling construction volume.
coal and gas outburstgas emissionoutburst risk identificationcritical value optimization
万方数据
维普
