中文摘要：

为快速、准确地确定颗粒流模型中的细观参数,采用单因素分析法,用平行黏结模型对类砂岩材料各宏观力学参数的影响规律进行模拟分析。结果表明,峰值强度同摩擦系数之间符合幂函数增长关系,而同平行黏结半径乘子之间符合线性增长函数关系,与平行黏结刚度比之间未有明显的函数关系;弹性模量同摩擦系数之间符合幂函数增长关系,与平行黏结半径乘子之间符合线性增长函数关系,与平行黏结刚度比之间符合指数函数衰减关系;泊松比同平行黏结刚度比之间符合幂函数增长关系,泊松比与摩擦系数、平行黏结半径乘子之间均符合指数函数衰减关系;峰值应变同平行黏结刚度比、平行黏结半径乘子之间均符合幂函数增长关系,峰值应变与摩擦系数之间未有明显的函数关系。

英文摘要：

To quickly and efficiently determine micro-parameters of the particle flow model,using single factor analysis method,the influence law of different parameters on the macro mechanical parameters of the sandstone material is simulated and analyzed by using the model of the parallel bond.The results show that：（1） the relationships between the peak strength and the friction coefficient,the parallel bond radius multiplier,the parallel bond stiffness ratio are respectively the power function,linear,no obvious function;（2） the relationship between elastic modulus and friction coefficient,the parallel bond stiffness are respectively the growth of power function,linear,the exponential function;（3） the relationship between Poisson＇s ratio and the parallel bond stiffness ratio,friction coefficient and the parallel bond radius multiplier are respectively the growth of power function,the exponential function attenuation relation;（4） the peak strain is consistent with the power function growth relationship with the parallel bond stiffness ratio and the parallel bond radius multiplier,there is no obvious relationship between peak strain and friction coefficient.