Abstract The Hoek–Brown criterion was introduced in 1980 to provide input for the design of
underground excavations in rock. The criterion now incorporates both intact rock and …

The quantitative determination of the geological strength index (GSI) and disturbance factor
(D) in the Hoek–Brown failure criterion is of great value because it can increase the …

The high uncertainties involved in the design and construction of mountain tunnels have
driven the development of risk analysis procedures to control the risk level within an …

Deformation calculation of the reinforced tunnel is always the key and difficult problem in
tunnel support design. To achieve simple and rapid tunnel performance evaluation, this …

In rock engineering design, significant advances have occurred in recent years in numerical
modelling capability with increasing trends to ever greater use of synthetic rock mass …

Abstract The terms “bimrocks”,“bimsoils” and “soil-rock mixtures” indicate different and very
common types of geological units with a block-in-matrix fabric that are also “geotechnically …

The chipping and grinding processes are the basis for understanding rock cutting during
TBM excavation in hard rock conditions. The chips are produced when tensile fractures …

Conventional rockmass characterization and analysis methods for geotechnical assessment
in mining, civil tunnelling, and other excavations consider only the intact rock properties and …

Abstract The Hoek-Brown (HB) empirical failure envelope is widely used for calculating the
mechanical behavior of the rock mass. An important input parameter of the HB failure …

Geological strength index (GSI) has been widely used as an input parameter in predicting
the strength and deformation properties of rock masses. This study derived a series of …