Comprehensive Gas Control Technology for Mining Protective Seam Face in Soft Coal Seams with Low Permeability
HU Ming
ZHANG Yuming
LEI Hongbo
YAO Feng
Abstract：In order to solve the problem of gas emission during the extraction of the protective seam in Yuyang Coal Mine, comprehensive gas control measures such as “U+ tailing way drainage” ventilation, gas pre-drainage from the seam being mined by large-diameter deep holes, gas drainage by crossing hole in the floor and so on were taken. The result showed that the gas concentration in return air of the working face was controlled below 0. 7% during coal mining and the month coal output of the face raised by 50%. This thus solved the gas overrun problem in the protective seam working face, improved the drawing rate of the face and realized safe production of the mine.
Keywords：protective seamcoal and gas outburstcoal seams groupcomprehensive gas 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：3( 60-62 )