A Novel Numerical Algorithm for Simulation of Initiation, Propagation and Coalescence of Flaws Subject to Internal Fluid Pressure and Vertical Stress in the Framework of General Particle Dynamics

• Published in: Rock mechanics and rock engineering Vol. 50; no. 7; pp. 1833 - 1849
• Main Authors: Bi, J., Zhou, X. P.
• Format: Journal Article
• Language: English
• Published: Vienna Springer Vienna 01.07.2017; Springer Nature B.V
• Subjects: Atoms & subatomic particles; Bonding; Civil Engineering; Coalescence; Coalescing; Compressive properties; Computer simulation; Crack propagation; Cracks; Damage; Defects; Dynamics; Earth and Environmental Science; Earth Sciences; Fissure water; Fluid dynamics; Fluid pressure; Fracture mechanics; Fractures; Frameworks; Geophysics/Geodesy; Hydraulic pressure; Hydrostatic pressure; Mathematical models; Methods; Numerical analysis; Original Paper; Pressure; Propagation; Rocks; Simulation; Stress analysis; Stress propagation; Tips; Vertical air currents; Water pressure; Propagation paths of cracks; Coupling effects of the vertical stress and the internal hydraulic pressure; General Particle Dynamics (GPD); Rock fracturing; Hoek–Brown criterion; Crack initiation

A novel numerical model in the framework of General Particle Dynamics is proposed to simulate the coupling effects of the vertical stress and the internal hydraulic pressure on the stress field around the tips of the flaw as well as the propagation and coalescence of cracks. In this proposed method,...