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Keywords: cohesion
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Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-028
... Abstract We propose a computational method for assessing bolt reinforcement of the tunnel face in cohesive frictional soils and weak rocks under seepage flow conditions. The method is based on limit equilibrium factors and can be applied to reinforcement layouts that are arbitrary in terms of the spacing...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-049
.... The addition of bentonite increases the geotechnical parameters such as maximum dry density, specific gravity, unconfined compressive strength, Young s modulus and cohesion. However, the addition leads to a decrease in the optimum moisture content, angle of internal friction and the hydraulic...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-148
... tests were performed on cylindrical samples to determine values for internal friction angle, cohesion and tensile strength. It was found that the water to cement ratio affects the uniaxial compressive and shear strength of grout. The triaxial test indicated that both internal friction angle and cohesion...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-167
... stope. reservoir geomechanics backfilled stope compaction coefficient Upstream Oil & Gas earth pressure porosity Reservoir Characterization stope backfill material horizontal stress metals & mining Engineering cohesion water pressure backfill slump analytical solution...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-072
... Intelligence Luxembourg machine learning cohesion rock mass University Upstream Oil & Gas horizontal sample tensile strength maastricht formation triaxial test strength Mergel limestone friction angle ABSTRACT: In this note, results of triaxial laboratory tests on very weak sedimentary...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-163
..., in fact, soil particle configurations vary with depth, due to the influence of weathering. In this study, numerical simulations are performed with the reduction of cohesion and increment of friction angle taking into account the ground weathering with depth, utilizing the finite difference method...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-164
... cohesion random variable drilling operation management realization point random parameter PEM strength parameter probabilistic numerical model dip direction ABSTRACT: Probabilistic wedge stability analyses of a cavern are carried out considering two sets of joints J1 and J2 as random parameters...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-145
... displacement rock mass strength soft rock joint friction angle Upstream Oil & Gas border area rock strength geotechnical design tunnel laboratory test Engineering Purpose classification system excavation friction angle Reservoir Characterization strength cohesion rock friction angle rock...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-191
... Earthquake possible situation weathered gneiss dam design gneiss conservative value Alejano cohesion stability geotechnical characterization metals & mining horizontal acceleration strength parameter Ecuador means safety Rocscience inigemm circular failure Rock Engineering and Rock...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-253
... regression cautious estimate hoek-brown criterion machine learning confidence limit triaxial test MPa characteristic failure envelope strength cohesion envelope stress range equation characteristic value principal stress Rock Engineering and Rock Mechanics: Structures in and on Rock Masses...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-001
... large differences between their high normal stiffness, and their low, scale-dependent shear stiffness. Joints obviously reach their peak shear strength at larger shear strain than intact rock, and their frictional strength remains after cohesion is lost, as in the words of Müller 1966. It is not...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-005
... rock such as Lac du Bonnet granite, the results should represent an upper bound. Hajiabdolmajid et al. (2000) used the following material properties for their initial modelling: Cohesion = 25 MPa Friction Angle = 48 Dilation Angle = 0 The results using the elastic perfectly-plastic consti- tutive...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-041
...-mineralizations, the cohesion decreased, thus resulting in a decrease in micro- and macro-mechanical properties (from the millimetric scale of micro-indentation tests to the decimetric scale of triaxial tests). This chemical weathering of anthropic-origin plays a major role in the long-term behaviour of ironstone...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-017
... indentation test piston cohesion mechanical property standard indentation test Rock Mechanics for Resources, Energy and Environment Kwas´niewski & ydz ba (eds) © 2013 Taylor & Francis Group, London, ISBN 978-1-138-00080-3 Assessing the mechanical properties of a rock using indentation tests H.-T. Le...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-029
... prevail within the geotechnical discipline, there always exists a probability that a slope may not perform as predicted, and in the worst case can result in a catastrophic failure. The rock slope stability analysis affected by the random input parameters such as internal friction angle, cohesion, water...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-050
... parameters (cohesion and friction angle) at rock-rock and concrete-rock interface is the most important primary step for stability analysis and design of dams. Determination of shear strength parameters involves the in-situ tests in drifts on the dam axis site and interpretation of test results. In view of...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-040
... parameters that affect deformability and strength, it is generally impossible to develop a uni- versal model that can be used to predict a priori the strength of a rock mass. Among the existing on-site tests to determine the cohesion and friction of a rock mass there are two main ones which, while highly...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2012, May 28–30, 2012
Paper Number: ISRM-EUROCK-2012-082
... interfaces using a simplified rheological model that includes friction and viscous elements. We demonstrated that the frictional sliding mechanism does produce inflections in the DRA curve. The detectible stress levels fall between the minimum and the maximum cohesions. An increase in the number of cracks...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2012, May 28–30, 2012
Paper Number: ISRM-EUROCK-2012-001
... Reservoir Characterization displacement rock joint suction control Upstream Oil & Gas normal stress roughness angle reservoir geomechanics roughness strength parameter shear displacement suction shear strength shear stress degradation dilatancy strength cohesion eurock 2012...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2010, June 15–18, 2010
Paper Number: ISRM-EUROCK-2010-022
... which construction is in use). In general, weathering includes two dominant processes (Fookes 1988), physical and chemical weathering. Reservoir Characterization Miš�ević marl procedure Upstream Oil & Gas Croatia test result strength cohesion investigation structural geology...

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