1) rib pillar
刀柱
1.
In order to ensure the safety of long-wall mining over an old rib pillar mining area,the stability of interlayer rock body under the action of mining-induced pressure needs to be evaluated and rational technical parameters for the long-wall mining determined.
为保证刀柱式老采空区上行长壁开采安全,需要对层间岩体在采动压力作用下的稳定性进行评价,并合理确定长壁工作面的开采技术参数。
2) knife mining
刀柱开采
1.
Approach on the parameters of the knife mining;
6A刀柱开采若干参数探讨
3) second mining
刀柱下复采
4) wedge pillar mining method
刀柱法采煤
5) room-and-pillar coal face
刀柱工作面
6) longwall-pillar mining
刀柱采煤法
1.
Longwall mining beneath the area mined with longwall-pillar mining method in ultra-close multiple-seams is the distance of the two coal seams is very short, superstratum coal seam use longwall-pillar mining method, underlayer coal seam use longwall mining.
极近距离煤层刀柱采空区下长壁开采法是指两层煤层的层间距离很近，上层煤层采用刀柱采煤法进行回采，下层煤层采用长壁采煤法进行回采。
补充资料：刀刀
1.动摇貌。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。