... was chosen for the analysis (Banverket 2005), see Figure 1. In this study the rock cover was set to 5m. strength outer-fiber stress tunnel face Upstream Oil & Gas shotcrete reinforcement minor principal stress parametric study tensile stress Reservoir Characterization material model...

... lower gneiss 8 0 upper gneiss 2 0 upper part excavation lower part displacement rock slope tensile stress earth-dam loading reservoir geomechanics elevation 380 minor principal stress compressive stress principal stress Reservoir Characterization loading case displacement vector...

... amount by which the major principal stress had exceeded the minor principal stress, even for a brief period. RESUME: L'emission acoustique provenant d'un echantillon de roche, soumise à un champ de contraintes uniaxial de plus en plus eleve, revèle une memoire de Kaiser Effect de la contrainte qui...

... periphery pillar structural geology energy release rate convergence rock mass metals & mining colliery minor principal stress reduction rock burst deformation Rock burst and energy release rate coups de toit et taux de relAchement d'energie Gebirgsschlage und die Geschwindigkeit der...

... for the major and minor principal stresses are shown in fig. 5. Rock type Ore Hang ing wa 11 Foot wall . Contact zones 4.2. Cross section Y1775 Stresses and displacements have been analysed by the finite-element method. The model. which is plane strain model. consists of 2750 nodal points and 2652 quadrilateral...

... Abtragsflache benutzt werden kann. INTRODUCTION Unstable regions in rock slopes may be identified through negative minor principal stresses (Bukovansky-Piercy, 1975, Kalkani, 1975) because of the comparative weakness of rock under tension. In case of inclined stratified rock, such as sedimentary formations...