Gas Control in Gas Enrichment Area with Igneous Rock Intrusion during Drivage
LI Yong
YAN Haijun
LI Hongzhen
LIU Deyin
TIAN Haitao
Abstract：The igneous rock intrusion range in 701 working face in north No. 7 mining district of 75 Shengjian Coal Mine was identified according to the mine geological conditions. Analysis was made on the impact of the igneous rock intrusion upon the gas occurrence in coal seam through laboratory tests. The results showed that the gas adsorption ability in the igneous rock intrusion area was stronger than that in the non-invaded area. The impact law of igneous rock intrusion on the mine gas emission was obtained through field measurement. During roadway driving, the gas concentration rising trend was not obvious before driving into the igneous rock intrusion area, while driving into the igneous rock intrusion area, the gas concentration showed a trend of rapid increase, and after driving though the igneous rock intrusion area, the gas concentration decreased slowly. Finally, the mine gas control problem can be better solved by analyzing the gas data, changing the ventilation conditions, controlling the gas emission volume and strengthening the gas monitoring.
Keywords：heading facegas enrichment areaigneous rockgas control technology
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( 72-75 )