upcast fault上升斷層;上投斷層;逆傾斷層
upcast side上投側
upcast shaft上風堅井
upcast air回風
upcast ventilating上風豎井
upcast air shaft出風井
upcast ventilation pipe上風管
upcast rentilating shaft出風井
upcast header上升管聯箱;上升管箱
1. air passage consisting of a ventilation shaft through which air leaves a mine