Application and establishment on evaluation system of gas drainage and outburst prevention to high outburst mine

in order to improve the accuracy of the mine gas drainage and outburst prevention standard evaluation.acomprehensive evaluation system of the muti actor indexes was establi hed and the system mainly included the evaluatio unit divided.gas drainage basc condition analysis drainage borehole que lty evaluation./esidual gas content evaluaton gas dynamic phenomenon evolution and others. With the esablishment of the comprehensive evaluation system applied toNo.12033 coamining face in Guizhou Znonging Mine afer evaluating there was no obwious blank region.Thed ling borehole unifomity spacing were 1.63 and 1.82 m which was less than the specified value of 2 m.The content ofresidual gas dropped below 8 m3 t.The working face extracion rate reached to 7.8%, which was greater than the specified value of 40M%.The coal and gas outburst accdent ocured coud be effectively avoided and the standardizaion and fine of the gas drainage and outurst preventon standard evaluation work were realized,.which coud provide the demon to the coal and gas utburst acident prevention in Guizhou high outburst mine and coud have good promotion and application value.