Analysis of the effect of joint roughness on the failure mechanism of jointed rock mass under direct shear loading.

ABSTRACT: The mechanical properties of jointed rock bodies are important in guiding engineering design and construction. Using the particle flow software PFC2D, we conducted direct shear test simulations on joints with various inclinations and five different roughness levels to examine the models' crack extension penetration paths, damage modes, and strength characteristics. The findings indicate that the direction of the joint influences the pattern of the rock crack and its penetration route. Under forward shear, the rock bridge creates a notched through surface, whereas under reverse shear it creates two adjacent through surfaces, categorised into four types of crack consolidation between joints with different inclinations: 'end to end', 'the end is connected to the middle', 'end connection', 'fi

SUBMITTER: Wang Z 

PROVIDER: S-EPMC11760554 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature