浅孔诱导落矿小分段空场采矿法在某金矿的应用

Application of short-hole induced caving sublevel open stope mining method in a gold mine

针对某金矿矿岩节理裂隙发育、矿体稳固性差、采准工程掘进与支护困难、回采安全性差等问题,在局部矿体破碎区域开展了浅孔诱导落矿小分段空场采矿法试验研究,利用矿岩本身的力学特性和受人为工程控制的崩落应力场来崩落破碎矿石。详细介绍了该方法的采场结构参数,采切工程布置、拉底切割和落矿等工艺。现场应用表明:采用该方法开采,采场生产能力达127 t/d,采矿损失率为9.2%,矿石贫化率为14.6%,取得了较好的效果,对于该类矿体的安全高效回采具有一定的借鉴意义。

In response to problems such as the development of rock joints and fractures in a gold mine,poor stability of the ore body,difficulties in preliminary mining and support,and poor safety in recovery,experimental research on the short-hole induced caving sublevel open stope mining method was carried out in localized fractured areas of the ore body.The method utilizes the mechanical properties of the rock itself and the caving stress field controlled by artificial engineering to cave crushed ores.The study provides a detailed introduction to the structural parameters of the stope,the layout of mining and cutting engineering,undercutting,and ore caving processes.Field applications have shown that with the implementation of this method,the production capacity of the stope reaches 127 t/d,the mining loss rate is 9.2%,and the ore dilution rate is 14.6%,achieving good results.It has reference value for the safe and efficient recovery of similar ore bodies.