In order to reveal the evolution law of the performance of fly ash tailings cemented backfill under different temperature fields,the fly ash tailings cemented backfill was taken as the research object.By controlling slurry temperature and curing temperature and conducting uniaxial compression test,the relationship between compressive strength of backfill and heating time under different temperature fields and the relationship between compressive strength of backfill and temperature field under different slurry temperatures were discussed.The results show that when the temperature field is consistent,the higher the slurry temperature,the greater the compressive strength of the backfill,and the longer the curing time,the smaller the compressive strength of the backfill,that is,the slurry temperature is positively correlated with the compressive strength of the backfill,and the curing time is negatively correlated with the compressive strength of the backfill.Under the influence of temperature fields,the compressive strength of backfill with high slurry temperature is larger,and the higher the temperature field is,the more significant the effect is.The reasonable regulation of slurry temperature has a positive effect on resisting the strength loss of backfill at high temperature.The research results can provide a theoretical support for the cemented filling of tailings under different temperatures.
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