STUDY ON THE RHEOLOGICAL CHARACTERISTIC AND EFFECT OF PASTE-LIKE SLURRY

Paste-like backfill is a new mode of mining backfill.Based on the experiment of rhelogical characteristic,the rheological mode and rheological parameter of paste-like backfill slurry by using sialite as cementing material were studied.The rheological mode of paste-like backfill slurry was esablished.Qualitative and ration analysis of the effect is conducted on the density of slurry,the content of fly ash,the content of sialite and slurry temperature to rheological parameter.The effect law was revealed.The result shows that the rheological mode of paste-like slurry is similar to that of Binhan plastic fluid.Paste-like backfill slurry density and the content of fly ash has closely relation with rheological parameter of slurry,slurry density 78% and the content 20% of fly ash is reasonable parameter.