Experimental and Simulation Analysis of Mechanical Behavior of Rock‐Like Materials Under Anchorage Effect

ABSTRACT To investigate the failure mechanism of rock‐like materials with crack samples and bolt composite structures, the study made rock‐like samples containing joint and bolt structures in laboratory tests to analyze the effects of cracks and bolt support on rock mass. Combined with particle flow code (PFC) simulation, the microscopic failure characteristics and crack propagation law of the specimens before and after anchoring are studied by self‐compiled code. As the inclination angle increases, the specimen is subjected to tensile, compressive, and shear stresses, producing a mixed damage of the three forces. Among them, the strength of the anchored specimen is effectively enhanced due to the bolt's ability to restrain the propagation of the existing cracks. By studying the displacement change and crack development law of multicrack specimens before and after anchoring, it provides reference values for revealing the failure mechanisms of geological formations and the effectiveness of reinforcement strategies.