Abstract:

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.

Key words: Hetai Gold Mine, Gold-deposit, Dry-placed fill method, Paving material, Selection&application