To investigate the influence of different fractures on the mechanical properties of rocks and to provide a basis for the stability of rock slope engineering containing fractures.The discrete element method (DEM) was used to establish a model of prefabricated fractured rock. Mechanical tests were conducted on the numerically simulated fractured rock using the Particle Flow Code in 2 Dimensions (PFC2D) software. The study analyzed the crack failure patterns and mechanical property variations of rocks with fractures at different angles under uniaxial compression tests.At the same loading rate, the strength of fractured specimens was lower than that of intact specimens. As the prefabricated fracture angle (α) increased, the compressive strength of the fractured specimens showed a gradual increase. During the uniaxial compression test, the failure characteristics began with damage on both sides of the prefabricated fractures, and the specimens exhibited shear slip failure.The research results provide theoretical support for understanding the failure mechanisms of fractured rocks. This study offers significant insights for the stability analysis and design of rock slope engineering projects containing fractures.

Tang Aoke, Liu Zishuai, Xu Sheng, Meng Jiangnan, Sun Lu. Analysis of Mechanical Properties and Crack Failure Characteristics of Rock with Pre-Existing Fissures Using Particle Flow Simulation. Academic Journal of Engineering and Technology Science (2024) Vol. 7, Issue 4: 79-83. https://doi.org/10.25236/AJETS.2024.070412.

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