Hydraulic fracturing treatment is one of the most efficient conventional matrix stimulation
techniques currently utilized in the petroleum industry. However, due to the spatiotemporal …

Mineralisation associated with fault, vein and shear zone systems can be related to
processes that operated when those systems were active. Despite the complexity of …

Microfractures are small, high-aspect-ratio cracks in rock that result from application of
differential stresses. Although the term has been used to refer to larger features in the …

The rock mass failure process is characterized by several distinct deformation stages which
include crack initiation, crack propagation and coalescence. It is important to know the stress …

To investigate the acoustic emission characteristic of rock under different compressive
loading rates, a numerical approach using the bonded-particle model (BPM) is adopted in …

Time-dependent brittle deformation is a fundamental and pervasive process operating in the
Earth's upper crust. Its characterization is a pre-requisite to understanding and unraveling …

We study acoustic emissions (AEs) associated with shear and tensile failures around a
horizontal borehole in a sandstone sample subjected to triaxial stress. The aim is to relate …

Rock masses in deep underground engineering are characterized by a complex geological
environment and mechanical properties with frequent hazards such as excavation-induced …

The elastic moduli of rock in areas susceptible to crack damage, such as within fault zones
or volcanic edifices, can be subject to large modifications. Knowledge of how elastic moduli …

We propose a numerical model based on static fatigue laws in order to model the time‐
dependent damage and deformation of rocks under creep. An empirical relation between …