Comprehensive Gas Control Technology of Coal Mining Face in Protective Seam
Abstract：In order to solve the large quantity pressure released gas emission from the protected seam during the mining operation of the coal mining face in No. 1122 （1） protective seam of Zhangji Mine causing a high gas content problems in the retuned air gateway during the mining process of the coal mining face in the protective seam, the gas drainage technology with boreholes along the seam, the top corner buried pipe and inserted pipe gas drainage technology, the gas drainage technology in the tail drainage roadway and high drainage roadway as well as bottom drainage roadway and other comprehensive control technology were applied. The results showed that, when above gas comprehensive control technologies applied, the gas drainage rate of the coal mining face could reach to 87.8% and the gas problems during the mining period of the coal mining face in the protective seam could be effectively solved.
Keywords：protective seamprotected seamtail drainage roadwayhigh drainage roadwaybottom drainage roadwaygas emission valuepressure released gas
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：3( 60-62 )