低温高寒环境下尾砂胶结充填体强度特性研究

研究了低温高寒环境下尾砂胶结充填体的强度特性, 并采用灰色关联分析方法探究了充填体强度对灰砂比、料浆质量浓度和养护时间等强度控制因素变化的敏感程度。结果表明, 低温高寒环境下, 充填体强度随着灰砂比、料浆质量浓度和养护时间的增大而增大, 影响充填体强度的最主要因素为灰砂比, 其次为养护时间, 再次为料浆质量浓度。

Study on Strength Properties of Cemented Tailings Backfill under Low Temperature Condition

Based on the experiment on strength properties of cemented tailings backfill in cold area at low temperature, gray correlation analysis was adopted to evaluate the influence of those controlling factors on the strength properties. Results showed that under such cold condition, the strength of fill-mass increased with an increase in the cement-sand ratio, mass concentration of the slurry and curing time. It was also found that cement-sand ratio had a predominant impact on the strength of backfill, followed by the factor of curing time and mass concentration.