Correlation between shear induced asperity degradation and acoustic emission energy in single granite fracture

Shear induced asperity degradation and gouge formation significantly affect the mechanical and fluid flow behaviors of single rough rock fractures, but the asperity damage process during shear has not been entirely understood and requires further investigation. In this study, direct shear tests were performed on the artificial and natural fractured granite specimens, respectively. The evolution of asperity damage during shear was monitored using...