It has become an inevitable trend of human development to seek resources from the deep
underground. However, rock encountered in deep underground engineering is usually in an …

It is significant to investigate the hardening-damage characteristics of the sandstone of the
roof under cyclic loading for the prevention and control of roof disasters and safe and …

The mechanical behavior of coal is the key factor affecting underground coal mining and
coalbed methane extraction. In this study, triaxial compression and seepage tests were …

Mechanical behavior and energy evolution of rock around the tunnel are critical for
evaluating the instability of geotechnical engineering. To reveal the influence of tunnel …

The effect of high temperatures up to 800° C on the physical and mechanical characteristics
and fracturing behaviour of Beishan granite is experimentally studied with a combination of …

The mechanisms for rock failure involve instability, where an energy exchange and
transformation occurs between the rock and an external energy source. Few studies have …

Discontinuities widely exist in natural rocks. To investigate the progressive micro-cracking
process and failure mechanism of fissured rocks, a series of biaxial compression tests were …

The objectives of this study are as follows: To establish the relationship between the
acoustic-emission (AE) parameters and mechanical-failure mechanism of tantalum-niobium …

Spalling is a typical brittle failure phenomenon of hard rock in deep caverns under high
geostress. In this study, key issues are systematically studied concerning the spalling failure …

Hard rocks exhibit three-dimensional (3D) stress-dependent failure under true triaxial
compression. The deformability and strength of hard rocks under true triaxial compression …