CHINA MINE ENGINEERING

With the popularization and application of backfill mining method in thick and large ore body mining, improving the quality of filling body has become an important link in mining process. In this paper, the filling process is optimized from the aspects of concentration control of filling slurry, setting of filling facilities in stope, selection of binding materials, etc. The technical routes such as selecting appropriate barricade, improving dehydration of fill mass, and adopting filling binding materials with low hydration heat and high strength are put forward to improve the quality of thick and large filling mass.