Simulation of the Fracturing Process of Inclusions Embedded in Rock Matrix under Compression

Typical parallel fractures are often observed in the outcrops of inclusions field. To reveal failure mechanism embedded rock matrix, a series heterogeneous models established and tested based on damage mechanics, statistical strength theory, continuum mechanics. The results show that, with spacing between two adjacent decreasing, stress is firstly transferred from negative to positive, then positive negative. Stress transition profound for fracture spacing. Meanwhile, three types fractures, i.e., consecutive fracture, non-consecutive debonding found, which consistent modes Multiple fractured easier than an isolated inclusion due disturbance newly generated fractures. Either single or multiple inclusions, tensile stresses inside main driving force initiation propagation. Besides, although material heterogeneity has small effect variation, it evident impact fracturing mode inclusions. stiffness ratio critical pattern; interface occurs earlier when relatively high. Additionally, content only affects sequence rather final pattern.