Abstract: The relevant theoretical calculation is carried out based on the setting of gas extraction parameters in outburst mines.Aiming at 15205 working face of Erjing Mine,on the basis of fully investigating the data of gas extraction with different drilling spacing,the relationship between the drilling spacing and the time of gas extraction reaching the standard is obtained by analyzing and comparing the time of gas extraction reaching the standard in different test areas.The study results have been successfully applied and tested,which provides a reference for the optimization of extraction parameters of similar outburst mines.

Key words: Outburst mine,Drainage up to standard,Parameter optimization,Drainage radius