DOI: 10.11799/ce201806022
Gas extraction methods in the lower adjacent layer of close-distance coal seam group in Lvliang Mining Area
CHEN Yun
Abstract：Most mines in Lvliang Mining Area are mining close distance coal seam group, and the gas emission below the adjacent layer is the main feature of the upper seam mining face. It is proposed that the lower adjacent layer gas extraction should be controlled from the source of gas emission, and make full use of the disturbance and pressure relief action of the mining coal seam to carry out the "intercepting extraction" technology. The practice of lower adjacent layer gas extraction in Gaojiazhuang Coal Mine, Shenzhou Coal Mine and Chiyu Coal Mine shows that the reasonable extraction method is adopted for different coal seam gas conditions, and the gas extraction flow and extraction rate in the lower adjacent layer pressure relief area can be improved obviously, and the purpose of saving the extraction cost and improving the pumping effect is achieved. It is of great significance to control the adjacent layer gas of near distance coal seam group in Lvliang mining area.
Keywords：Lvliang Mining Areaclose distance coal seam grouplower adjacent layergas extractionintercepting drainage
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 78-80,84 )