十字交叉裂隙扩展机理试验与数值模拟研究
贺桂成,陈科旭,戴兵,王程程

Experimental Study and Numerical Simulation Analysis of Crack Propagation Characteristics of Crisscross Fracture
Guicheng HE,Kexu CHEN,Bing DAI,Chengcheng WANG
表2 完整试样PFC细观参数
Table 2 Micro-parameters in PFC for the complete sample
参数取值参数取值
颗粒密度/(kg·m-31 999颗粒摩擦因子0.3
最小颗粒半径/mm0.4平行黏结拉伸应力/MPa14±1
最大颗粒半径/mm0.5平行黏结黏聚力/MPa8.5±0.5
颗粒刚度比1.9平行黏结拉伸摩擦角/(°)36.2
平行黏结刚度比1.9