Rock anisotropic damage characterisation and its evolution model by integrating acoustic emission tomography and ultrasonic monitoring

• DOI: 10.1016/j.ijrmms.2024.105817
• Publication Date: 2024-06-29T09:21:01Z
• Authors: Xu Li; Guangyao Si; Anye Cao; Changbin Wang; Joung Oh; Zhengyu Zhang; Ismet Canbulat
• Keywords: Acoustic Emission; Damage mechanics

With the exploitation of deeper underground resources with harsh working conditions and significant geotechnical issues, it is challenging to quantify damage evaluation (especially anisotropic damage) stressed rock materials. The insufficient understanding inside may result in unexpected hazard potential engineering. However, most current acoustic emission (AE) data analysis limited isotropic stage AE-based characterisation has not been well integrated continuum mechanics. Therefore, by adopting multiple monitoring technologies such as ultrasonic wave velocity measurement, active AE location passive tomography, paper investigated characteristics Gosford sandstone samples under triaxial compressive tests. Multiple parameters including event location, P energy were used correlate microcracking internal during loading process. variable was determined using heterogeneous field obtained from based on both linear non-linear stress strain relationships. evolution further following frameworks thermodynamics This study casts light laboratory-scale identification, which improves