PDF(120 KB)
PDF(120 KB)
PDF(120 KB)
港里铁矿无底柱分段崩落采矿中巷道稳定性控制
({{custom_author.role_cn}}), {{javascript:window.custom_author_cn_index++;}}Control of the Stability of Drift of Non-pillar Sublevel Stoping in Gangli Iron Mine
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