Abstract The Hoek–Brown failure criterion has developed into the most widely used system
for estimating rock mass strength in rock engineering. The reason lies in its unique …

A wide range of constitutive models exists to quantify how the applied forces will lead to
breakdown of rock samples. This paper reviews the mechanical models that have been …

Underground mining has historically occurred in surface and near-surface (shallow) mineral
deposits. While no universal definition of deep underground mining exists, humanity's need …

This paper presents the analytical solutions for the responses of tunnels excavated in rock
masses exhibiting strain-softening behavior. Since previous analyses give little …

By applying the Griffith stress criterion of brittle failure, one can find that the uniaxial
compressive strength (σ c) of rocks is eight times the value of the uniaxial tensile strength (σ …

The dilation angle is the most commonly used parameter to study nonlinear post-peak
dilatancy (PPD) behavior and simulate surrounding rock deformation; however, simplified or …

Experimental and field observations of rock failure show that the failure process is closely
associated with rock dilation, an indicator of volumetric increase during rock deformation …

Outburst-rockburst coupling dynamic disaster is a complicated process of the unstable
failure of a gas-bearing coal-rock combination system, which remains great challenges to …

A super stiff rock mechanics testing machine called Stiffman is introduced in this paper. This
test facility uses composite loading frames and relay loading by two loading hydraulic …

This research reviewed the mechanics and gas desorption properties of intact coal, and
tested the crushing work ratios of different intact coals, and then, studied the stress …