Most past studies on coal shrinkage/swelling due to gas adsorption/desorption were based
on experiments under no constraint conditions. In this paper, the changes of stress and …

A new triaxial strength equation is proposed as fitting the available laboratory triaxial test
data. It is shown how the five triaxial parameters-unconfined compressive, tensile and shear …

The Hoek-Brown criterion. first published in 1980 and updated several times since, is now in
widespread use throughout the geotechnical community. The authors have an interest in …

A modelling approach consisting of best-fit relations to estimate the post-yield strength
parameters is presented for simulating post-peak behavior beyond the point of residual …

This paper presents a strength criterion for intact rock, which can well describe triaxial test
data under compressive or tensile stress state. The proposed criterion is defined in terms of …

1.1 BACKGROUND Man involvement with rock strength estimation extends backward far
into prehistory. Constructions and sculptures, such as the Abu Simbel Temple and the …

W rozprawie tej rozważane są fundamentalne dla mechaniki skał zagadnienia zachowania
się skał w złożonych stanach naprężenia, aw szczególności wytrzymałość graniczna i …

Coalbeds are an extremely complicated porous medium with characteristics of
heterogeneity, dual porosity and stress sensitivity. In the past decades great achievements …

Convergence velocity, as an indicator for stability of coal mine roadways has been used in
this study. The concept has been extended to a spectrum of conditions in several coal mines …

It is well known that rock bolting in an underground excavation produces an improvement in
the strength properties of the rock mass and also reduces rock movement. The increase in …