龙头沟金矿削壁充填采矿法在极薄矿体中的应用研究

Resuing Method in Extremely Thin Ore Body of Longtougou Gold Mine

摘要: 针对龙头沟金矿Ⅳ号矿体局部矿段厚度为0.2米~0.5米极薄矿体采用浅孔留矿法回采造成矿石大量贫化现象，拟采用削壁充填法回采。因此在1160中段3号矿块进行削壁充填采矿方法采矿试验，文中详述了削壁充填采矿法的回采工艺、采矿过程中存在的问题及解决办法。采用削壁充填采矿方法比浅孔留矿采矿方法平均每吨矿石采矿成本减少37.8元，生产相同金属量节省直接选矿费用109.9元/吨，综合每吨矿石利润比浅孔留矿法高159.4元。经过这次削壁充填法采矿方法试验，积累了实践经验，取得了科学、有效、可靠的实验数据，为矿山后期对极薄矿体的开采提供了支撑。

Abstract: In view of the leading gold mine IV local ore block the orebody from 0.2 meters to 0.5 meters thick thin orebody by shallow hole shrinkage stoping method caused a lot of ore dilution phenomenon of extraction，the proposed resuing method of extraction. Therefore, the mining test of wall cutting and filling mining method was carried out in No. 3 block in the middle section of 1160. In this paper, the stoping technology of the resuing method, the problems existing in the mining process and the solutions are described in detail. The paper elaborates the resuing method, problems and solutions in the process of wall cutting and filling mining. The average cost per ton of ore in the shallow-hole stoping method is 37.8 yuan less than that in the shallow-hole stoping method, and the direct dressing cost is 109.9 yuan per ton less than that in the shallow-hole stoping method. The profit per ton of ore is 159.4 yuan higher than that in the shallow-hole stoping method. Through this experiment, we have accumulated practical experience and obtained scientific, effective and reliable experimental data, which provides support for the mining of extremely thin orebody in the later period.