将煤矸石用于胶结充填可降低成本,有利于环境保护,煤矸石由于块度大、不均匀系数高,易在搅拌桶内率先沉淀,影响了搅拌效果。对充填浆体制备流程进行了研究分析,发现煤矸石在搅拌均匀的水泥、粉煤灰浆体中的沉降速度要远远小于其在清水中的沉降速度。根据这一特性提出了对充填物料下料顺序的优化。 The use of coal gangue for cementing filling can reduce costs and be conducive to environmental protection. Coal gangue, due to the large block size and high nonuniformity coefficient, is easy to precipitate in the mixing drum and affects the stirring effect. The filling slurry preparation process was studied and analyzed. It was found that the settling velocity of coal gangue in well-mixed cement and fly ash slurry was much less than that in clear water. According to this characteristic, the optimization of the feeding sequence of filling material is proposed.