Abstract: Fill mining has becomed the important way of geological hazard control, wasteless mining realization. Therefor, experimental study on cementing material which take blast furnace slag as the main material was carried out. Including physical property determination of filling aggregate and new type cementing fill material matching test. The new type cementing material has the characteristics of low cost, high strength and better bonding capacity than milltailings and so on, could reduce filling cost greatly, has good economic benefit and social benefit.

Key words: Cementing material, Blast furnace slag, Gangue, Excitant