干式充填法采场铺垫隔离材料的选择及应用

使用干式充填采矿法回采作业时,为了把采下矿石与其下面的充填材料隔开,其间需要有一层隔离材料,以减少采矿损失和贫化。此种材料应具备强度高、成本低及可重复使用等特点。由于采场面积较大和不平整,河台金矿采用C7.5号水泥砂浆、按厚度0.15 m的规格构筑隔离层,综合效果良好。

Select& Apply Stope Paving Separate Material in the Use of Dry-placed Fill Method

Use dry-placed fill method we need a layer of separating material in order to separate ore from paving material, to reduce loss & dilution. So this kind of material should be of high intensity, low cast, good index of loss & dilution & can be reuse. For the large scope & bumpy of the stope, Hetai Gold Mine applied c7.5#danded cement grout to build separate layer with 0.15m depth standard, which had a good effect.