Damage and Fracture Behavior of Rock

Abstract

[...]the sudden change of instability of deep well rock mass is the result of crack initiation, propagation, and macroscopic failure surface formation. [...]rock fracturing is also the starting point of disaster breeding in deep rock engineering. The influences of joint/fissure geometry parameters, environment effect, loading condition, and size effect on strength and failure characteristics of jointed rock/rock-like specimens are evaluated. [...]the new equipment for rock fracturing recognition has also been discussed in this issue. The strength parameters and failure characteristics have also been analyzed and discussed. [...]in order to investigate the failure behavior of jointed rock mass under different stress environment, scholars have conducted a series of experimental or numerical research studies; the influence of loading condition on mechanical behavior jointed rock mass is analyzed in the following papers: “The Effect of Confining Pressure and Water Content on Energy Evolution Characteristics of Sandstone under Stepwise Loading and Unloading,” “Mechanical Behavior of Shale Rock under Uniaxial Cyclic Loading and Unloading Condition. In their paper, a statistical damage model has been established to formulate analytical constitutive relations for deformation behavior. [...]comparisons between predicted results and experimental data also show a good agreement.