... Abstract This paper describes an improved formulation of an analytical shear strength model developed by Haque & Kodikara (2012) by incorporating the failure of regular concrete/rock joints subjected to CNS condition. Sokolovskii's analytical solutions developed for failure stress...

... (monotonic) loads and cyclic (dynamic) loads. Most of the previous experiments have focused on determining shear mechanism and shear strength parameters of rock joints under monotonic loading (Barton 1977; Jing et al 1992; Grasselli 2001; Moradian et al 2010; Asadollahi 2011; Barton 2013). Some of them have...

... Abstract In this paper, an anisotropic shear behavior of rock joints is investigated under constant normal load condition (CNL). The natural rock joint roughness is transferred to artificial rock samples using room temperature vulcanizing (RTV) silicon rubber. Artificial cylindrical rock joint...

.... reservoir geomechanics Upstream Oil & Gas 13th international congress rock joint shear plane Wellbore Design normal stress Reservoir Characterization displacement shear stress rock-concrete interface loading condition direct shear test Montreal shear strength rock mechanics isrm13...

... Characterization strength Moradian Upstream Oil & Gas roughness rock joint shear strength steel plate shear test Wellbore Design 13th international congress concrete specimen shear testing rock mechanics isrm13 Montreal reservoir geomechanics displacement joint surface Situ Shear Testing...

... Abstract Mechanical behavior of rock joints is often the key factor governing the response of complex structures constructed in fractured rock masses such as underground openings or of objects assembling various stones blocks such as historical building walls or damaged marble statues...

... of rock discontinuities under different shear deformation velocity of constant normal loading, the law of influence of shear velocity on the total friction angle is studied. Based on the research results, it can be found that the total friction angle of rock joint specimens varies in the form of negative...

... Abstract The effect of rock joints is significant in characterizing dynamic behaviors of discontinuous rock masses. To reveal the relation between the transmission coefficient and the contact situation of the joint surface, an experimental study on stress wave propagation across an artificial...

... source method wave propagation propagation displacement multiple wave reflection rock mass equation medium model rock joint jointed rock mass interface Harmonising Rock Engineering and the Environment Qian & Zhou (eds) © 2012 Taylor & Francis Group, London, ISBN 978-0-415-80444-8 Different...

... ABSTRACT A numerical method to determine the contact areas of a rock joint under normal and shear loads is proposed. The method requires only three dimensional surface coordinates at the initial stage before shearing, while in other conventional methods disparate materials are inserted between...

... ABSTRACT The shear behavior of rock joints greatly influence by the presence of asperity and the normal stiffness of the surrounding rock mass. Correct evaluation of the shear strength of rock joints plays an important role in the design of deep underground openings, stability analysis of rock...

... ABSTRACT The application of a split Hopkinson pressure bar technique has been an active research topic to determine dynamic properties of rock materials, however, subjected of less attention on rock joints. One possibility is the configuration of long bars is especially suitable for the one...

... cohesion and friction parameters. machine learning Upstream Oil & Gas criterion joint model reservoir simulation Barton elasticity experiment rock joint Reservoir Characterization strength Thickness mechanism laboratory shear strength equation experimental data panek Artificial...

... on the stiffness of rock mass. Reliable prediction of shear behavior of rock joints for both conditions has been an important issue in rock engineering field. In this study, an empirical model of shear behavior of rock joints was proposed from direct shear tests using a servo-controlled shear testing machine...

... and operation of the Pilot Plant existing at Daejeon, Korea. The results obtained from the study with regards to the formation of the ice-ring, showed that the freezing temperature of the water flowing through rock joints is affected by the latent heat during freezing, aperture of joints and the flow rate...

... behave in terms of settlement, stability and excavation in engineering projects and for the through-flow and storage of liquids and gases. However the nature of and, in particular, the origin of rock joints, faults and other naturally occurring structural discontinuities or fractures are dealt...

... ABSTRACT The purpose of this paper is to clarify the mechanism of flow in a rock joint using a developed flow simulation method taking into account the aperture distribution of a rock joint. Shear-flow coupling test has been conducted under constant normal stress condition after...

... ABSTRACT The shear characteristics of rock mass are subjected to not only to the shear force but also to the boundary conditions given by neighboring rock mass. The boundary conditions of the rock mass can be classified into four categories according to the stress state of the rock joint...

... ABSTRACT Laboratory shear tests of rock joints are the common tool to evaluate the shear strength. Their results are fundamental to assess the safety conditions of Rock Engineering projects. This paper will present the different types of tests that can be carried out, with a special focus...

... developed and employed to the shear test. The tests were conducted on the joints molded out of hydrostone. The joint surfaces were shaped to simulate asperities from natural rock joint. Under a constant normal stress and a free condition of dilatancy, pitch and roll, direct shear test were conducted...