神华集团神东矿区哈拉沟煤矿在长壁工作面回风巷中采用了一种新型自移式超前支护支架组。
A new type self-walking advance timbering support set is adopted in longwall coal mining face of Halagou coal Mine, Shendong coal District by Shenhua Group co.
认为钻孔的破坏是随着工作面推进而发生的动态过程，布置在靠近回风巷侧钻孔更加稳定。
The result shows that the borehole destruction occurs in the dynamic process of coal face advancing, and it is more stable when the borehole location is close to tailgate.
本文提出了一种全新的综放工作面通风系统：顶层瓦斯巷小煤柱外错底层回风顺槽布置，具体是一种放顶煤工作面顶板排瓦斯巷位置的改进。
This paper proposes a new working face ventilation system: top gas tunnel small pillar outside the bottom return air laneway layout, in other words, which is gas tunnel location evolution.
在垂直工作面推进方向上呈“J”字型，且对回风巷附近气体密度影响较大；
The direction of perpendicular to face advance shows J shape and the influence is bigger near the return airway.
在垂直工作面推进方向上呈“J”字型，且对回风巷附近气体密度影响较大；
The direction of perpendicular to face advance shows J shape and the influence is bigger near the return airway.
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