Homogeneity-dependent fracture behavior and instability mechanism of composite coal-rock: Insights from three-point bending tests

• Published in: International journal of mining science and technology Vol. 35; no. 6; pp. 913 - 932
• Main Authors: Yue, Weitao, Wang, Enyuan, Feng, Xiaojun, Tan, Tingjiang, Zhang, Li, Chen, Dong, Zhang, Qiming, Ding, Zeng
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.06.2025; Elsevier
• Subjects: Composite coal-rock; Fractal characteristics; Fracture behavior; Homogeneity; Instability mechanism; Homogeneity; Fractal characteristics; Composite coal-rock; Instability mechanism; Fracture behavior

To investigate the instability mechanisms of heterogeneous geological structures in goaf area roofs, three-point bending tests (TPBT) and numerical simulations are performed on composite coal-rock (CCR). Acoustic emission (AE) monitoring is employed to analyze key parameters, establishing a multi-pa...