Experimental and Numerical Investigations on the Macro-Meso Shear Mechanical Behaviors of Artificial Rock Discontinuities with Multiscale Asperities - Xinrong Liu; Bin Xu; Guangyi Lin; Junhui Huang; Xiaohan Zhou; Yingkun Xie; Jiwen Wang; Fei Xiong (Rock Mechanics and Rock Engineering, 2021)