| 摘要 |
Method for weakening coal seams includes drilling wells for forward shooting of seam and initiation of blasts in those. The wells after drilling are tightened, after that methane-air mix obtained in the mine at preliminary degassing of coal seams is pumped in there. Content of methane is controlled in each well, and when its content is from 9.5 % to 10.0 % blast is initiated. |
