This review paper summarizes recent advances and challenges in the assessment of rock
behavior and performance in deep low-permeability and high-temperature geothermal …

Obtaining quantitative information on the state of stress in the crust can only be
accomplished by accessing the zone of interest by drilling. The borehole cavity, however …

During the excavation of deep rock engineering projects under high geostress, the brittle
failure of hard rock often occurs. To understand the excavation-induced fracturing process of …

Spalling and rockburst are two common failure modes in deep hard-rock tunnels and they
exhibit a strong correlation. In this paper, the process of rockburst induced by spalling is …

For a full understanding of the cracking processes in granite, uniaxial compression tests are
conducted on prismatic specimens with pre-existing flaws, and digital imaging and AE …

Most rockbursts are associated with jointed rock masses as the energy stored inside the rock
is prone to abruptly release at such discontinuities. Moreover, remote blasting at working …

Determination of the cracking levels during the crack propagation is one of the key
challenges in the field of fracture mechanics of rocks. Acoustic emission (AE) is a technique …

A grain-based distinct element model featuring three-dimensional (3D) Voronoi tessellations
(random poly-crystals) is proposed for simulation of crack damage development in brittle …

Increasing demand for metals caused by global economic growth and exploitation of
shallow mineral deposits forces mineral extraction to go deeper. A direct consequence of …

Fracturing process and possible factors influencing crack initiation, propagation and
coalescence of granitic rocks are investigated using a grain-based finite-discrete element …