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基于分数阶理论,研究了破碎岩体分数阶流变模型,采用分数阶流变模型以及整数阶流变模型与实验数据对比分析。结果表明:对于破碎岩体蠕变过程,流变模型的分数阶形式拟合精度高于各自的整数阶形式精度。其中,Burgers模型的分数阶形式拟合精度都高于其他模型的拟合精度。
Based on the theory of fractional order, fractional rheological model of fractured rock mass was studied. Fractional rheological model, integral rheological model and experimental data were compared. The results show that for the creep process of broken rock mass, the fractional order fitting accuracy of the rheological model is higher than that of the integer order form precision. Among them, Burgers model’s fractional form fitting accuracy is higher than other models fitting accuracy.