露天矿地下采空区探测与综合整治技术研究

Study on detection and comprehensive disposal technology of underground goaf in open-pit mine

为探索露天矿开采过程地下未知采空区的探测与整治方法,实现露天矿安全开采与地下采空区处置的协同进行。以巨龙铜矿露天采矿过程中的地下采空区为研究对象,研究采空区探测及处置方法。结合露天矿开采条件及采空区状况,提出钻孔探测和三维激光扫描相结合的采空区探测手段。提出大直径深孔爆破崩落的采空区处置方法,消除采空区安全隐患、回采残矿资源。通过现场工业试验,验证了技术方案并大规模应用于矿山实际生产。研究结果表明:钻孔探测和三维激光扫描相结合的方式探测采空区精确简便,大孔爆破崩落处置采空区的方式安全有效,为高原露天矿开采过程中的地下采空区探测与快速处置提供了技术支撑与借鉴。

In order to research the method of detection and disposal of unknown underground goaf of open-pit mine,and realize the safe mining with underground goaf disposal.Taking the underground goaf disposal in Julong open-pit Copper Mine as the research object,the detection and disposal method of the unknown goaf in open-pit mine were studied.Combined with open-pit mining and goaf conditions,a plan was presented by that drilling detection and 3D laser scanning to detect the goaf disposal method using long holes caving,which can eliminate the potential safety hazard and recovery the remnant ore.Through industrial experiment,verifying the technical scheme was verified and applied to mine production on a large scale.The result of research shows that drilling detection and 3D laser scanning method can get the precise form of the goaf,caving with long holes method is safe and effective,which provides technical support and reference for the goaf detection and fast disposal of in open-pit mine.