Research on Application of Three-dimensional Gas Drainage Technology in Protective Seam Extraction of Thick Outburst Coal Seam Group
GONG Xuanping
Abstract：When the extraction of the lower protective seam is used as a regional outburst prevention measure for the group of thick coal seams, a large amount of methane in its upper and lower adjacent seams emitted into the working face, which often caused gas overrun and brought great hidden danger to the safe production of the mine. For solving this problem, three-dimensional gas drainage from the gas emission source in II020703 working face in Wulan Mine was carried by taking some outburst prevention measures in this face including the surface boreholes, high-level boreholes, boreholes along the seam, crossing boreholes in the floor and the gob management. The tests showed that the three-dimensional gas drainage technology can effectively solve the problem of gas overrun in the extraction of the protective seam of the group of thick coal seams, and this thus provided technical reference for other mines with similar conditions.
Keywords：three-dimensional gas drainage technologythick outburst coal seam grouplower protective seam extractionworking facecomprehensive gas prevention and control
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 73-76 )