The ore and surrounding rock in Luoyang mining area of Panluo Iron Mine are of stable type, where openstoping method is adopted.
潘洛铁矿洛阳采区矿石及围岩均属稳固类型,开采方法采用空场法。
2
Medium and deep hole casting blast sublevel openstoping method is suggested and its suitability to the stope ground pressure is expounded.
提出了中深孔抛掷爆破分段空场法,并阐明其对采场地压的适应性。
3
To fully exploit the resources, Qingtonggou Mercury-antimony Mine adopts the sublevel openstoping with delayed filling to recover the remanent ore-body at the medium stage of 550~600 m.