1-20 of 62
Keywords: stiffness
Close
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-033
... classification system eurock 2020 stiffness © International Society for Rock Mechanics and Rock Engineering Norwegian Group for Rock Mechanics ISBN: 978-82-8208-072-9 C.C. Li, H. Ødegaard, A.H. Høien, J. Macias (Eds.) ISRM International Symposium Eurock 2020 Hard Rock Engineering Trondheim, Norway, 14-19...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-036
... process of damage of interface is characterised by the progressive degradation of the interface stiffness, which indicates the failure of the cohesive surface. The shear behaviour of the interface explained above can be divided into three stages, elastic stage (AB), bond failure stage (BC) and friction...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-081
... underground pillar design, the relation between the post-peak behavior of pillars and stiffness of the surrounding strata has been extensively studied. These two concepts play an important role in determining the failure mode of the coal pillars and the amount of potential energy that can be converted to...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-014
... stiffness, may lead to a radical change of the deformation regime from stable creep to stick-slip and the amount of radiated energy. It is established experimentally that the geomechanical parameter that controls fault shear behavior is the ratio of the shear stiffness of the fault to the one of the...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-101
... 0.33 Unit weight (MN/m3) 0.019 Slip surface Shear stiffness (MN/m2/m) 500 Normal stiffness (MN/m2/m) 1,000 cohesion (MN/m2) 0 Static friction angle (degree) 39 Dynamic friction angle (degree) 35 time history non-linear analysis by direct integration method. Figure 8 shows the model of analysis. The...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-117
... Reservoir Characterization displacement prediction working hypothesis rock engineering limit state analogue application hypothesis Artificial Intelligence information beam analogue limit state design metals & mining material property boundary condition excavation stiffness...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-163
... only a small influence. For some samples shear displacements lead to dilatation, but an increase in fluid flow/hydraulic aperture was only observed for a slate specimen. The investigated joint normal and shear stiffnesses yield a potential explanation for this phenomenon, since the slate exhibit also...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-181
... carried out, which includes the influences of fault stiffness, the incident angle and the frequency of incident waves on the peak particle velocities (PPV) of the ground motions. 1 INTRODUCTION The blast-induced wave propagation across rock masses has a great influence on the design and construction of...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-001
... compare well with elastic solutions when adequate support is afforded. It was found that the representative rock mass stiffnesses affecting the rock bolt and the lining forces are different, and they are derived from different scales. To ensure that the rock bolt forces are not dominated by specific...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-073
... Abstract This study deals with the comparison of the results of shear tests conducted under conditions of constant normal load (CNL) and constant normal stiffness (CNS). The aim was to investigate whether the shear strength results of the two test procedures are comparable and whether the...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-070
... modulus E0 and Poisson ratio 0, submitted to a uniaxial compressive stress in the z direction Fractures have an infinite normal stiffness and a null shear stiffness 2.1 Displacement in a single fracture In absence of friction, the resistance of crack to shear stress is ensured by the surrounding...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-071
... reservoir geomechanics joint stiffness Reservoir Characterization secondary state vein element progressive failure Upstream Oil & Gas normal stress FEM model strength property structural contact stiffness normal stiffness vein interblock structure Artificial Intelligence...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-077
... scaling method Wellbore Design Proportion volumetric block proportion Reservoir Characterization mechanical characterization bimrock determination deformability reservoir simulation block-in-matrix rock displacement fault material block orientation shear displacement stiffness ABSTRACT...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-113
... domain creep rupture short-term damage Figure 5. Free shrinking and swelling of COX (a) and OPA (b) claystones in dry and humid conditions. Wetting alters the inner structures of the claystones and degrades the mechanical stiffness and strength. Figure 6 shows the results of uniaxial compression tests on...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-133
... Fluid Dynamics mineral phase damage threshold granite Upstream Oil & Gas heterogeneity peak strength axial strain curve tensile strength strain curve flow in porous media strength micro-scale heterogeneity strength envelope stiffness Reservoir Characterization aperture...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-144
... fluid flow and c is the storage coefficient, which reflects the ability to store water e.g. due to compaction of the medium. To allow for time dependent shotcrete stiffness, an aging concrete law defined by a chain of Maxwell units was deployed. For the deformation elements nonlinear elements with bi...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-150
... elements. The effect of multiple jointed rock mass is examined by adding a second joint set at specific orientations. Parametric analyses are carried out for the joint friction angle, for the stress field, in combination with varying joint orientation, joint density and joint stiffness. The analysis...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-185
...). In this paper, a 3D finite element back-analysis of twin shallow tunnels excavated in stiff clays is presented. The simulation is based on a preliminary calibration of the soil constitutive model parameters against laboratory tests. The results are evaluated and compared with monitoring data of...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-191
... displacement rates usually occur close behind the tunnel face, where the young shotcrete still has a low strength. Therefore, a yielding element with a deformation controlled stiffness behavior is required to protect the young shotcrete. Energy subjected to the lining and caused by deformation of the ground is...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-181
... al. 2007) the cohesion and the friction angle are determined. The shear stiffness and the normal stiffness are calculated by equations given by Indraratna & Ranjith (2001). These properties are used in the discrete element analyses (PFC2D). The physical and mechanical properties of samples used in...

Product(s) added to cart

Close Modal