论文部分内容阅读
针对某大型岩金矿山软破矿体分段崩落法采场上覆虚碴条件下的放矿问题,研发了诱导冒落与预留矿石垫层联合覆盖层形成技术,分段组合放矿控制与矿岩接触面呈台阶放矿技术,编制了放矿控制图表,并从现场出矿、出矿口品位控制与出矿顺序及工艺控制的角度强化现场放矿管理,矿山试验矿块取得了贫化率23.18%、损失率23.55%的较优技术指标,实现了软破矿体分段崩落法的安全经济开采。
Aiming at the problem of draining ore under the conditions of overburden and slack caving in soft rock broken ore body of a large rock gold mine, the joint formation technology of induced caving and reserved ore cushion was researched and developed. The contact surface with the ore is a step ore drawing technology, and the draining control chart is prepared, and the on-site ore drawing management is strengthened from the point of view of the ore-dressing, the grade control of the ore-outlet and the ore-discharging order and the process control, The rate of depletion is 23.18%, and the loss rate is 23.55%, which achieves the safe and economical exploitation of sub-caving method of soft broken ore body.