The mechanical characteristics and failure behavior of rocks containing flaws or
discontinuities have received wide attention in the field of rock mechanics. When external …

In this paper, the cyclic constitutive equations were proposed to describe the constitutive
behavior of cyclic loading and unloading. Firstly, a coupled damage variable was derived …

To deeply understand the rock failure characteristics under actual engineering condition, in
which static geo-stress and dynamic disturbance usually act simultaneously, impact tests …

Brittleness is one of the important properties of rock, which is of great significance in rock
engineering. The evaluation of brittleness index is a useful way for the estimation of rock …

This paper experimentally evaluates and quantitatively compares stress-induced damage
progression and acoustic emission (AE) in granite and sandstone based on continuous …

Theoretical and experimental studies have revealed that energy dissipation and release
play an important role in the deformation and failure of coal rocks. To determine the …

Granites are inevitably subjected to the effects of repeated water quenching in the process of
geothermal energy exploitation. To gain a greater understanding of the mechanical …

The crack closure stress σ cc, crack initiation stress σ ci and crack damage stress σ cd are
important mechanical parameters to describe the brittle failure mechanism of hard rock. To …

A new energy-dissipation method to identify crack initiation and propagation thresholds is
introduced. Conventional and cyclic loading–unloading triaxial compression tests and …

Identifying crack stress thresholds of rocks under different loading conditions, eg long-term
monotonic or cyclic loads, are crucial in the design of rock excavations and underground …