大直径深孔阶段矿房法
large-diameter deep-hole mining by sublevel room work method
单出矿进路阶段矿房法
Single-entry bench room mining
阶段矿房法
Bench room mining method
stage mining
the stage mining way by using mine post
阶段磨矿阶段选别流程
Stage grinding and stage separation flowsheet
阶段凿岩阶段矿房法
Mining ore of thick-rock stage
生命期阶段间边界
life cycle stage boundaries
铀成矿阶段
phase of uranium metallization
有底柱阶段崩落法
pollar bench caving method