Similarity Simulation Experiment on Strength Distribution in Three-Dimen-sional Spatial of Cemented Tailing Backfill
Received date: 2018-03-31
Revised date: 2018-05-18
Online published: 2018-10-17
To discover the distribution law of cemented tailing backfill，a similarity simulation experiment was designed according to the size of sublevel filling open stope in a copper mine.According to Froude similarity criterion，filling experiments were carried out to simulate filling velocity and filling amount.Samples were drilled from three dimensional space and uniaxial compressive strength （UCS） experiments were performed on all samples.UCS distribution laws of cemented backfill samples in three dimensional were analyzed.The results show that：UCS of cemented tailing backfill①Shows marked nonuniform in sublevel open stope；②Step down and then rise in the longitudinal；③On the transverse，the middle is higher than the fringes；④On the vertical，the strength on bottom is commonly higher than the top.According to previous studies and this experiment，the nonuniform distribution of cemented tailing backfill is mainly caused by factors such as tailing gradation， cement content and slurry concentration during consolidation and flow settlement characteristics
Wenchen LI , Lijie GUO , Xinzheng CHEN , Zongnan LI , Xin LI . Similarity Simulation Experiment on Strength Distribution in Three-Dimen-sional Spatial of Cemented Tailing Backfill[J]. Gold Science and Technology, 2018 , 26(4) : 528 -534 . DOI: 10.11872/j.issn.1005-2518.2018.04.528
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