..., a need arose to find a method which could practically assess the uniaxial compressive strength (UCS) and Young's modulus of elasticity (E) based on easily determined material characteristics. Extensive testing of natural stone for the development and introduction of underground mining in quarries [4...

... distributions for the recommended methodology were compared using statistical analysis. The typical range of the elastic linear deformability for the chosen rock types was determined. Thus the evaluation of the best Young modulus determination method was performed. Tangent Young modulus was recommended...

... ) and static modulus of elasticity ( E ) of the intact rock material. Many parameters affect to strength parameters, but some of them are applicable to empirical or analytical equations and the other difficulty, high-quality core samples of appropriate geometry are needed to find out these parameters...

... ABSTRACT: The analytical solutions involving the distribution of stresses around a small hole in an infinite elastic plate have been extensively applied for the elastic stress analysis of underground openings or excavations with simple geometry. Although these solutions are widely known...

... Abstract The elastic properties of the Copenhagen Limestone matrix material are spanning over more than two scales of magnitude. The sizes of rock constituents, the bulk density and the degree of induration of matrix material vary. The measured value of the elastic modulus depends...

... is reduced. The 15-node triangular elements with a Mohr- Coulomb perfectly elasto-plastic soil model were adopted for soil and rock model. The pile was mod- eled as a linear elastic material with the Young s modulus of 3.3 × 107kN/m2, obtained as an average value from laboratory tests on concrete cylinder...

... in Figure 1. General view of the excavation and piles. a marl soft rock mass. Mechanical parameters such the modulus of elasticity used in the finite elements are the result of an interpretation of the geotechnical survey by the conventional procedures. In-situ measurements of retaining system deformations...

... Abstract Six granitic rocks from Galicia (NW of Spain) widely used as ornamental stones have been studied. Physical properties such as bulk density and total porosity, abrasion resistance, uniaxial compressive strength and dynamic modulus of elasticity, as well as petrographic characteristics...

...Rock Engineering and Rock Mechanics: Structures in and on Rock Masses Alejano, Perucho, Olalla & Jiménez (Eds) © 2014 Taylor & Francis Group, London, 978-1-138-00149-7 The static and dynamic elasticity parameters of laminated silty-clay shales at the simulated depth up to 4 km A. Dziedzic & J...

...) and workpiece traverse speed (0.5 m/min) was kept constant in the cutting tests. To calculate elastic parameters of rocks, the velocities of P and S-waves were measured using the high frequency ultrasonic pulse technique instrument. The ultrasonic elastic parameters such as modulus of elasticity, shear modulus...

... Abstract: The present study reports the results of experiments conducted to under-stand the influence of saturation on dynamic elastic constants of sandstones. The intact rock specimens of sandstones have been tested using ultrasonic pulse technique to determine their compressional wave...

... isotropic rock mass is derived by conformal mapping method. Although the cross section of the tunnel is assumed to be parallel to the isotropic plane, the displacement analytical solution indicates that radial displacement of surrounding rock is related not only to elastic modulus and poisson ratio...

... as well as additional stress in surroundings of mine workings distanced by tens or hundreds of meters from initiating focus. Such stress in rock massif could reach values of big magnitude so that a rock burst and release of elastic deformation energy occur causing conspicuous deformations and devastations...

... strength only was measured for cylindrical specimens. Both uniaxial tensile strength and modulus of elasticity in tension were measured for specimens formed by AW1 because the tensile failure initiated always in contracted section of the specimen (see Fig. 6) and therefore also initial length of the spec...

... compressive strength prediction capacity database core sample Rock Mech Wellbore Design elasticity Engineering Geology uniaxial compressive strength literature equation Eurock 2005 -Impact of Human Activity on the Geological Environment - Konecny (ed) © 2005 Taylor & Francis Group, London, ISBN...

... of the equipment led to obtaining stress-strain diagrams similar to those resulting from servo-controlled testing machines. It was also found that the effect of coupling between elasticity and plasticity exists in some of the specimens, although for other specimens no such result was obtained. These results show...

... of elasticity were obtained. For this objective a specific laboratory installations were designed, which are able to evaluate with high precision all the abovementioned parameters. The load support capacity of the surface stabilization system for different TECCO® Mesh installation conditions, were determined...

... degrees as shown in Fig.3. This tunnel was located at the foot of the terrace in Diluvial age and has earth cover of less than 10m. elasticity pipe increase ratio stiffness deformation cylindrical loading test excavation crown settlement steel pipe displacement cylindrical shell theory...

... reservoir geomechanics elasticity specimen Wellbore Design crack length Reservoir Characterization hydraulic fracturing toughness fracture toughness value rod fracture toughness test result fracture toughness Upstream Oil & Gas Ankara andesite technical university DCB test...

... ABSTRACT: Experimental data from triaxial compression and extension tests on a weak sandstone (Red Wildmoor) are analysed. This rock exhibits stress-dependent elasticity, damage, friction hardening, cohesion softening and dilatancy which are modelled within the frame of a coupled elastic...