cohesion

By testing the setting performance of the backfill slurry,the change rules of setting time following concentration and ratio are analyzed,and the assembly time scope of backfill setting after it fill in mined-out area is calculated in order for ensuring safe production.

结果表明,在一定浓度范围内干料中水泥掺量是影响料浆凝结性能的重要因素,浓度的影响次之。