Research on the Redeformation Pattern of Collapsed and Broken Rocks Based on Similar Materials
[Purposes]This paper aims to study the compaction and deformation characteristics of crushed rocks after filling with water in the mining area.[Methods]The method of model sample is used to scale the broken rock in the caving zone,and the compaction deformation characteristics of the broken rock in the old goaf under the influence of different environments(dry,saturated and graded immersion)are studied by using the self-made compaction device.[Findings]The main research results are as fol-lows:the compression(z)and creep stage compression(Δz)of the crushed specimens of similar materials under saturated and dry conditions have the relationship of"saturated>dry".[Conclusions]In the old mining area,the deformation of the crushed rock in the collapse zone was already large before the water level filled the whole mining area,and the effect of subsequent water filling on the crushed rock was weakened and the deformation produced was less than 30%of the deformation in the creep stage.
万方数据
维普
