... fractal dimension and average strain rate. Moreover, there is a linear relationship between fractal dimension and specimen absorbed energy. The rock fractured process can be quantitatively described through fractal dimension, which can reflect the deep rock broken degree and is an ideal index to evaluate...

... the evolving velocity, strain-rate and strain fields. Introduction The problem of indentation, which is usually referred to in the context of hardness testing is ubiquitous as a material characterization technique for a large class of solids. Mechanical properties of materials such as yield stress, flow...

... loading condition rock mechanics isrm13 MPa constitutive model strain rate ANALYSIS OF THE VISCOPLASTIC BEHAVIOUR OF UNDERGROUND OPENINGS IN ROCKSALT *M. Aubertin École Polytechnique de Montréal Dept. Civil, Geological and Mining Engineering CP 6079, Station Centre-Ville Montreal, QC, Canada H3C...

... Abstract Dynamic characteristics of frozen soil is important for the safe, effective and rapid construction in cold regions and artificially frozen engineering. In this paper, dynamic characteristics of frozen clay with various low temperature and different strain rate were studied by using...

... rates are chosen to illustrate the application of this model, and good agreement between experimental data and numerically simulated results is obtained. The calculated results indicate that, under the same conditions, the damage at higher strain rate is less than that at low one. So the phenomena...

... Upstream Oil & Gas axial strain rate dependency strain rate creep life specimen wet specimen uniaxial compression test Reservoir Characterization Loading Rate dry specimen time-dependent mechanical behavior rock mechanics isrm13 13th international congress water-saturated...

... rainfall sensor kobayakawa 13th international congress displacement new borehole inclinometer Earthquake borehole inclinometer sensor unit deflection strain rate rock mechanics isrm13 MEASUREMENT BY THE NEW BOREHOLE INCLINOMETER USING FBG OPTICAL FIBER SENSORS FOR SLOW MOVING ROCK SLOPE *H...

..., curve about stress versus strain and other parameter at strain rates of 23.9/s 108.4/s were obtained from impact compression. The dynamic tensile strength and critical tensile failure strain at strain rates of 2.3/s 25.6/s were obtained from impact flattened Brazilian. The experimental result show...

... Costa creep parameter strain rate differential stress storage underground storage Harmonising Rock Engineering and the Environment Qian & Zhou (eds) © 2012 Taylor & Francis Group, London, ISBN 978-0-415-80444-8 Underground storage of natural gas and CO2 in salt caverns in deep and ultra-deep...

... mechanics and statistical theory, through combining visco-elastic model and statistic damage model, considering the influence of confining pressure and strain rate to rock mechanical properties, a new statistical damage constitutive model of rock based on weibull distribution under dynamic loading...

... ABSTRACT The Split Hopkinson Pressure Bar tests of frozen clay are carried through at −5°C, −7°C, −10°C, −12°C, 15°C, −17°C and −20°C at four different strain rates of 300/s, 600/s, 1050/s and 1450/s. The experimental analyses show that flow stress of dynamic stress-strain curves increases...

... rocks in Finland. Third non-standard test experimented is the strain rate stepping test. The main goal of conducted strain stepping experiments was to provide well-documented laboratory test cases for comparison with data from numerical models. The results of strain rate tests can also be utilized...

... reservoir geomechanics completion burger-deterioration model mountain tunnel Upstream Oil & Gas rheological model in-site monitoring data Deformation Characteristic strength convergence deviatoric behavior Deformation analysis Reservoir Characterization strain rate burger-mc...

... wellbore integrity Upstream Oil & Gas Strain Rate Effect reservoir geomechanics structural geology dynamic brazil test hydraulic fracturing Engineering Rock mechanics specimen international journal Reservoir Characterization Wellbore Design strength Mining Science tensile test...

... such as density, wave velocity and Young's Modulus decreases with the increase in the temperature applied. An increase in strain rate is obtained from the same pressure with the increase of temperature applied. The effect of high strain rate has shown that with the increase of strain rate, there is an increase...

... cavern pressure Brine Germany brine pressure rock mass Reservoir Characterization evolution salt cavern permeability clausthal-zellerfeld cavern rock salt Conf permeability increase strain rate 11th Congress of the International Society for Rock Mechanics Ribeiro e Sousa, Olalla...

... cavity viscoplastic model application evolution strain rate 893 Pellet F. et al. Viscoplastic behaviour of and damage to rock related to the design of underground waste depository cavities ISRM 2003 Technology roadmap for rock mechanics, South African Institute of Mining and Metallurgy, 2003...

... management safety proof repository interaction dilatancy material model saliniferous rock formation construction permeability mechanics deformation strength Waste Disposal rock formation strain rate Some new aspects on the safety proof for waste disposal in salt mines Sur la demonstration de...

... andert die dynamische Bruchstarke des Felsens. 1 INTRODUCTION Rock fragmentation by blasting is a dynamic fracture process. The rock is subjected to a high strain rate load due to the pressure generated by the detonation of the explosive. In this case, a dynamic treatment of the problem seems...

... such as creep deformation, creep failure, and rock strength increase with strain rate. Once the applied stress having overcome the sliding resistance of the slider, the dashpot becomes active and generates the time-dependent and visco-plastic deformations. If the slider has strain softening characteristics...