Hard roof is the primary concern of strata control in underground mining. Various techniques
have been utilized to fracture the hard roof and control the failure of strata. Understanding …

The deformation modulus of a rock mass is an important input parameter in any analysis of
rock mass behaviour that includes deformations. Field tests to determine this parameter …

The primary objective of this work was an examination of the complimentary roles of tensile
damage and confinement reduction (or stress relaxation) on excavation response of “hard” …

The failure mechanism and failure mode of anisotropic rock masses are very different from
those of isotropic rock masses. For unsupported tunnels, the failure modes of anisotropic …

The stability and associated design of roof reinforcement requirements of tunnels driven in
United Kingdom Coal Measures strata is directly related to the engineering characteristics of …

Classical assessment of instability potential in underground excavations are normally based
on yield and rupture criteria for stress driven failure and on limit equilibrium analysis of …

Flexural toppling failure (FTF) is one of the main types of toppling failures and frequently
occurs in anti-inclined rock slopes. A new UDEC Trigon approach for simulating FTF of a …

Natural and anthropogenic caves may represent a potential hazard for the built environment,
due to the occurrence of instability within caves, that may propagate upward and eventually …

Tunnel construction in a rock mass produces damage around the tunnel by concentration of
in situ stress and by construction activity such as blasting. The generated damage changes …

Aiming at the significant deformation problem of deep buried stratified soft rock tunnel, taking
the No. 3 inclined shaft of Muzhailing tunnel as background, the deformation and failure …