金川二矿区+1 000 m中段水平矿柱回采方法研究
寇永渊,李光,邹龙,马凤山,郭捷

Study on Mining Method of Horizontal Pillar in the Middle Section of +1 000 m in Jinchuan No.2 Mining Area
Yongyuan KOU,Guang LI,Long ZOU,Fengshan MA,Jie GUO
图3 二矿区整体开采纵投影图
Fig.3 Vertical projection of the No.2 mining area in Jinchuan