Abstract:
With the high strength of coal mining, the underground gas drainage is not sufficient to solve the problem of the gas. The research of surface borehole drilling extraction has been becoming a hot spot in domestic. Through sorting out and analyzing the related surface borehole drilling material of domestic mining area, the paper demonstrates the mechanism of surface borehole drilling extraction pressure released gas of the mining area, pointes out the research situation of current mining area surface borehole drilling technology. The paper points that utilizing the relation among stress fields,seepage field and fractures field, considering the system research of surface drilling control range of different mines and different geological condition will provide theoretical support for stope strike separation layout of surface drilling in mining area.