Practice on Comprehensive Gas Drainage Technology in High Gassy Mine
Abstract：According to the status of a high gas emission value and high gas content at the upper corner in No. 1263 coal mining face of Zhaozhuang Mine, a comprehensive gas drainage method combined with gas pre-drainage in mining seam, gas drainage with high level borehole and pipeline buried in goal was applied in No. 12 seam. With the gas pre-drainage in mining seam, the gas drainage value increased by 0. 46 - 1.02 times than conventional borehole layout. After gas drainage with high level borehole conducted, the gas relative emission value of the adjacent seams reduced from 4. 38 - 10. 17 m^3/t to 1.46 - 3.16 m^3/t. The gas drainage with pipeline buried in goal ensured the gas volume fraction in the mining goaf kept at 0. 7% -0. 9% and controlled the gas volume fraction below 1.0% stipulated in Mine Safety Regulations.
Keywords：gas pre-drainage in mining seamgas drainage with high level boreholepipeline buried in goafgas drainage
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 52-54,96 )