井下铁矿巷道掘进工作面超前预警探测

金属矿山井下巷道施工过程中掌子面前方的地质条件复杂多变,尤其存在采空区或含水采空区时,安全危害极大。为保障矿山开拓巷道施工安全高效,进行相关的超前预警探测研究显得非常重要。为此,利用最新型的瞬变电磁法测量设备,使用自制多匝-超多匝重叠小回线测量装置,采用扇形布点的数据采样方式,运用多种数据处理解译方法,在井下铁矿-10 m中段掘进巷道掌子面前方成功发现含水破碎带和遗留老旧采空区。其成果表明井下瞬变电磁法可以实现金属矿山掘进巷道掌子面的超前预警探测,为金属矿山安全生产提供技术保障。

Advanced Early Warning Detection Ahead of Tunneling in Underground Iron Ore

During the underground tunnel construction process of metal mines,the geological conditions in front of tunnel face vary widely,especially when the goaf or the water-containing goaf occurs,resulting in great safety hazards.In order to ensure the safety and efficiency of mine roadway construction,the advanced early warning research is much needed.Therefore,water bearing fracture zone and goaf left in front of roadway tunnel face in the underground mine -10 m middle are found by adopting the upgraded TEM equipment together with the self-made multi-turn or over multi-turn small coincident loop measuring device,through the sector positioning data sampling method,and using multiple data processing and interpretation method.The results showed that the mine TEM method can be applied in advanced warning detection of roadway tunnel face in metal mines,and can provide technical guarantee for the production safety of metal mines.