... is therefore a challenge for the hydropower industry. artificial intelligence risk management engineering upstream oil & gas renewable energy us government rock mechanics stability reassessment concrete dam peak shear strength rock joint eurock 2020 shear strength monolith criterion...

... Abstract The estimation of the mechanical properties of rock joints is crucial in terms of safety when it comes to design of slopes in open pit mines or caverns used for the storage of hazardous materials, for instance - nuclear waste. Photogrammetry provides a simple, objective method...

... ABSTRACT: Basic friction angle is an essential parameter when estimating shear strength of rock joints, according to Barton's equation and other approaches. Nevertheless, there is still no standard procedure to estimate it by means of laboratory testing. This study investigates the influence...

... element platform. This paper presents the procedures and derivation of stiffness matrices of the bolt crossing multiple joints (BCMJ) at any arbitrary orientation. Multiple joints and a bolt can intersect an element enriching nodal degrees of freedom. In this case, constitutive model of rock, rock-joint...

... ABSTRACT: This paper reports about the influence of normal- and shear displacements on the permeability of artificially created rock joints with different surface roughness. A new experimental setup was designed to allow linear flow on a fracture of area 150 × 150mm and also for normal...

...Rock Mechanics and Rock Engineering: From the Past to the Future Ulusay et al. (Eds) © 2016 Taylor & Francis Group, London, ISBN 978-1-138-03265-1 Modelling of the mechanical behaviour of an opened rock joint Y. Li, J. Oh, R. Mitra & B. Hebblewhite School of Mining Engineering, UNSW Australia...

... ABSTRACT: The primary aim of this paper is to review a recently proposed shear behaviour model of infilled rock joints in which joint surface characteristics and the properties of the joint and infill materials has been taken into account. The empirical model has also finally validated based...

... Abstract Some rock engineering designs are based on the Barton shear strength criterion for rock joints. One of the more relevant input parameters of this criterion is the basic friction angle. Nevertheless, no method is suggested to determine this value. Initially, the basic friction angle...

... to be exercised when roughness parameters are to be deduced from the datasets. 1 Introduction The shear strength of rock joints is primarily dependent on their surface roughness. In order to achieve a save and cost-efficient design in rock engineering it is desirable to measure joint roughness as accurate...

... the results from one test under CNS conditions are sufficient to describe the shear behavior of a rock joint. The experiments were carried out on artificial samples with identical material properties. To ensure that the geometry was identical, replicas of natural rock joints were prepared using silicone molds...

... Abstract Some limitations of the models of limit equilibrium of forces for rock mass joints are discussed here, especially the exclusive use of dimensionless geometric parameters of roughness. A new limit equilibrium model of strain energies for rock joints, which allows the integration...

...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 Advances, current limitations and future requirements for a numerical shear box for rock joints using PFC2D E. Lazzari & F...

... University, Delhi, India K.S. Rao Indian Institute of Technology, Delhi, India ABSTRACT: Shear and deformation behaviour of infill rock joints under constant normal stiffness conditions have been studied much less despite their natural occurrence, because of difficulty in physical, experimental, analytical...

... descriptions. Engineering Rock mechanics consideration roughness amplitude University scale effect rock joint limit equilibrium model shear strength Upstream Oil & Gas Barton Patton asperity Archambault strength strain energy amplitude rock mass equation Rock Engineering...

...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 Considerations on the laboratory estimate of the basic friction angle of rock joints J. González, N. González-Pastoriza, U...

...Keynote lectures 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 Shear strength of rock, rock joints and rock masses Problems and some solutions N.R. Barton Nick Barton...

..., in this paper is proposed a characterisation of the fractal dimension of the joints with a circumference arc generator. strength rock joint Fractal analysis joint profile Artificial Intelligence correlation irregularity characterization equation circumference arc generator roughness...

... Abstract Shear strength of rock joints decreases dramatically, possibly to the residual value, with increasing degree of opening. Compared to the closed joint, the asperity contact area of the opened joints is smaller; shearthrough happens more easily and dilatancy is less remarkable...

... friction angle foundation stability analysis rock joint rock mass interface impersistent joint hydraulic pressure shear strength friction angle criterion gravity dam safety factor failure path failure mechanism Rock Engineering and Rock Mechanics: Structures in and on Rock Masses Alejano...

...; failure at high stresses taking place earlier than at low stresses. Reservoir Characterization test piece rock joint creep test Upstream Oil & Gas Westerly granite specimen Creep behaviour strength Interdependence chromite ore time factor creep creep property temp deformation...