... the bottom outlet (Figure 1). geology application geotechnical software construction moduli foundation excavation adjustment geologist turkey government yusufeli dimension relaxation asia government information ic consulenten zt gesmbh documentation designer figure 3 contractor...

... investigation methods and targets opened new perspectives for rock mass characterization, but also disclosed limitations to be considered for a successful application. INTRODUCTION The deformation properties of rock mass are particularly important for foundations of large civil structures. Static moduli...

... rock during loading from micro-crack initiation to failure stage. Both Young's moduli and Poisson's ratio were calculated using the stress-strain curves. By using parametric investigation, the crack damage stress, determined for Poisson's ratio-axial stress graphs. Also, this research outline...

... was therefore the identification of zones with an elastic modulus below the required minimum. This was achieved by detailed mapping of the embrasure as well as by correlating the UCS, determined by Schmidt hammer, with the elastic modulus. For parts of the headrace tunnel, additional dynamic elastic moduli were...

... ABSTRACT: The differential characteristics of temperature- and pressure-dependent dynamic and static elastic properties are investigated in a range of temperature and confining pressure for porous sandstone. Results show that the dynamic and static Young's moduli increase against confining...

... and both increases with confining pressure. From compression tests, the static Young's modulus E 0 ° , E 45 ° , E 90 ° increase with confining pressure but decrease dramatically of soaked samples. In conclusion, the dynamic Young's moduli exceed static values regardless of direction, confining pressure...

... characterization deformation laboratory specimen validation deformation characteristic moduli significance reservoir geomechanics characteristic strength upstream oil & gas shear strength diameter plane heterogeneity young shear resistance transducer figure 3 comparison post-failure...

... experiments were performed on these rocks in order to estimate and compare the Young’s Modulus, the Poisson’s ratio and the Bulk Modulus obtained by static and dynamic methods. Our results shows that the elastic moduli obtained by the static and dynamic experiments are in the same order of magnitude. 1...

... Abstract A shaly sand model is presented that combines the application of the bounds for dispersed clay modeling and Backus averaging technique for laminated clay modeling. The model produces anisotropic elastic moduli. The moduli are easily populated in 3D or along a proposed wellbore...

... General context and objectives It has been extensively reported in the literature that the static moduli of porous rocks determined from static stress-strain data can differ significantly from the dynamic moduli derived from ultrasonic wave velocity measurements. Several attempts to explain this contrast...

... characteristic plane stiffness tensor rock mechanic reservoir characterization shear stiffness filler dilatancy compliance tensor moduli wellbore design stiffness poisson dependency matrix upstream oil & gas deformation modulus tensor asymptotic averaging orthogonal coefficient formula...

... which is perpendicular to mirror zones (Figure 1c). The rupture nucleus of an event can be identified via the plumose structures that radiate from this location (Figure 1b). upstream oil & gas moduli proneness rockburst poisson percentile assessment consideration reservoir...

... by porosity, density and TOC measurements. Saturated rock bulk moduli were measured through ultrasonic velocity measurements. Saturated rock bulk moduli correlate best with the sum of kerogen and pore volume fractions, rather than each of them separately. The volumetric fractions were also used to define...

... Reservoir Characterization static moduli bedding Upstream Oil & Gas reservoir geomechanics elastic property rock mechanics isrm13 shale 13th international congress Schmitt geophysics stress dependent anisotropy perpendicular anisotropy structural geology symmetry axis moduli...

... different formulas to determine overall (by the least-squares method), instant and interval moduli. Different moduli interpreted from PLTs are compared to moduli from the LFJ test data. The case shows typical problems encountered in PLT data interpretation. Reservoir Characterization lfj moduli...

... specimens having different coring directions. The applicability of transversely isotropic model to the chosen rocks was quantitatively investigated by comparing the values of apparent elastic moduli with the theoretical ones predicted by tensorial transformation of compliance matrix. The mean prediction...

.... Liao Department of Civil Engineering, National Chiao-Tung, Hsin-Chu ABSTRACT: Analytical solutions for body wave velocities are yielded for a continuously inhomogeneous orthotropic rock, in which Young s moduli (Ex, Ey, Ez), shear modulus (Gxy, Gyz, Gxz), and the medium density all varied exponentially...

... the underground excavations, a set of methods was applied including dilatometers, seismic and ultrasonic measurements, determination of moduli of deformations by the Hoek and Brown method applying the Bieniawski rock quality classification as well as defining the values of moduli from the measured convergence...

... and calculated settlements, and the estimation of in-situ deformation moduli. The moduli deduced from the simple empirical equation proposed by Hoek et al. (2002) and Gokceoglu et al. (2003) as a function of GSI, and Verman et al. (1997) that incorporates the influence of the confining stress in the deformation...

... Reservoir Characterization aperture normal stress heated block test Upstream Oil & Gas Barton experiment thermally Rock mechanics thermal expansion coefficient joint closure reduction tension fracture rock mass reservoir geomechanics strength heating moduli block test...