The paper intrtroduced some partial ventilation management methods at drivingface in coal tunnel.
介绍了煤巷掘进工作面局部通风管理方法及管理经验。
2
The effect of stress-releasing hole and water injection to the face on rock stress state around gateway drivingface has been studied in this paper.
本文研究了卸载孔及向掌子面注水对煤巷掘进头岩石应力状态的影响。
3
Aimed at the gas gush change law of every construction craft in the blasting drivingface, the appropriate measure is adopted for gas comprehensive management.