地下空区露天高效协同处理方法
By combining open-pit mining with deep-hole blasting from top to bottom to treat the cantilever beam, the safety hazards of underground voids were resolved, and safe and efficient mining and resource recovery were achieved.
CN117948851BActive Publication Date: 2026-07-17CHINA MINMETALS CHANGSHA MINING RES INST +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA MINMETALS CHANGSHA MINING RES INST
- Filing Date
- 2024-02-21
- Publication Date
- 2026-07-17
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Figure CN117948851B_ABST
Abstract
本发明提供了一种地下空区露天高效协同处理方法，地表采用露天开采方式分三个台阶剥离表土，采用进路出矿堑沟底部结构，每个采场底部布置一条受矿巷兼中深孔凿岩巷，采准工程设计为底部出矿结构及上部凿岩硐室，凿岩硐室顶板采用光面爆破，施工时采用锚杆+金属网的方式支护，地下采用上向扇形孔和下向大直径深孔处理悬臂梁和空区，上分段靠近地表的悬臂梁采用上向扇形中深孔爆破，下分段靠近空区的悬臂梁采用下向大直径深孔爆破，对凿岩爆破参数进行优化设计，采用精准控制爆破技术上、下分段同时起爆，悬臂梁爆破后的矿岩全部落入空区内，形成地下空区露天高效协同处理工艺技术，处理了悬臂梁减小了空区风险，保证矿山的安全高效开采。
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