论文部分内容阅读
利用MTS816电液伺服试验系统与自制破碎岩体流变试验装置,采用分级加载法,研究饱和破碎泥岩在轴压下的流变特性.在分数阶微积分理论基础上,基于三参量流变模型,提出一个新的分数阶流变模型.利用1stOpt数学软件拟合了不同轴压下新分数阶流变模型的各参数.结果表明,新分数阶流变模型可以较好的描述破碎泥岩的流变规律,并给出了工程实例.随着轴压增大,破碎岩体流变稳定状态时的孔隙率呈负指数减小.
Based on the theory of fractional calculus and based on the three-parameter rheological model, the MTS816 electro-hydraulic servo test system and the self-made rheological testing device for the fractured rock mass were used to investigate the rheological properties of the saturated fractured mudstone under axial compression. , A new fractional rheological model was proposed.The 1stOpt mathematical software was used to fit the parameters of the new fractional rheological model under different axial pressures.The results show that the new fractional rheological model can better describe the fractured mudstone The rheological law and the engineering example are given.With the increase of axial pressure, the porosity of the fractured rock mass decreases in a steady state with a negative exponential decrease.