Experimental study of acoustic emission multi-parameter information characterizing rock crack development

Monitoring the acoustic emission (AE) signals released during rock fracture process can reflect the crack development and damage in the rock in real time. As that there are few rock damage indicators at present, it is unsuited to in-situ monitoring and early warning. Based on small-scale AE uniaxial compression experiments in the laboratory, through adopted phased AE source location and wave velocity tomography, it was found that the process of...