To seek the technique method for mining the thick seam in high gas and outburst mine safely and effectively,experimental researches are carried out on the laws of gas emission coal roadways such as protective seam,protected seam and beforehand drainage seam while excavating in the thick seam at the same area in high gas and outburst mine,and the causes are anslyzed.

Application of confirmation model for reasonable pre-draining time is introduced in this paper.

Technology of gas pre-drainage with deep borehole pre-cracking blasting for gateway rapid excavation in seam with outburst;

According to the compressed outburst features of the earth stress as the leading function in 11-2 seam of Dingji Mine in Huainan Mining Area and the slow driving problem of the seam gateway,the paper provided the gas pre-drainage and gas outburst elimination technology with large diameter and long borehole along the seam.