中国矿山工程

Against the background of solid waste disposal and comprehensive treatment of open-pit backfilling in a certain mine, due to the fact that the unclassified tailings of the mine are fine faction tailings and contain S and clay minerals that have a negative impact on the strength of the filling body, in order to select a cementitious material that is more suitable for the full tailings of the mine, select cement and glue-powder as two types of cementitious materials to contact the experimental study on the performance of filling slurry, results indicate: although SBT filling body have better characteristics at the aspect of bleeding and settling compared to glue-powder, in terms of the two key indicators of filling strength and fluidity, the performance of glue-powder is superior to that of cement and the cost is lower, showing that glue-powder is more suitable for solid waste disposal and backfilling treatment in this mine; through sensitivity analysis, it can be concluded that the strength of cemented by glue-powder is most sensitive to the ash sand ratio, followed by the curing age, and finally the slurry concentration.