近距离保护层开采瓦斯涌出规律及治理研究

A research on mine gas inflow regularity during gas extraction in contiguous protective coal seams and gas control

通过瓦斯涌出来源分析,认为只有采取本煤层平行抽采抽放,底板穿层钻孔抽放邻近层和开采层的瓦斯等相应的瓦斯治理措施,才能取得较好的防治效果。

Giving sources of gas inflow in mined out areas, this paper reaches the conclusion that gas extraction from parallel boreholes drilled in the coal seam under mining operation from air--intake tailgate and air--returning tailgate, stress--relaxing gas extraction from face--end upper corner via high--positioned boreholes, gas extraction from contiguous coal seams and/or coal seams under mining operation via multi--layer penetrating boreholes drilled in floor strata and face--end upper corner gas extraction via ＂T＂ pipe arranged in gob area following face advancement are appropriate solutions to mine gas control.