... Characterization p-wave seismic velocity calcite rock sample deposit 2 idziak procedia engineering 191 procedia engineering 191 hypothesis velocity value Upstream Oil & Gas responsibility elastic property carbonate rock anisotropy time interval Procedia Engineering 191 ( 2017 ) 483 487...

... that the dynamic peak stress increases with increasing strain rate whereas the elastic modulus does not show any clear trend with increase in strain rate. Dynamic force equilibrium at the incident and transmission bar ends of the rock samples is attained in all tests till the failure of the rock samples. Dynamic...

... Abstract The paper describes the investigation results on specific strain energy in hard rocks (urtite, ijolite and apatite-nepheline ore) under uniaxial compression, tension and triaxial compression. The ways of strain energy accumulation have been shown in the investigated rock samples under...

... were performed by using core sample retrieved from Cretaceous formation, and intrinsic permeability was evaluated. Secondly, the internal structure of rock samples was observed by X-ray CT scanner, and porosity distributions were also evaluated by comparing CT image data between the dry and the water...

..., it is expected that the material movement due to the diffusion is prevented. Here, one-dimensional diffusion tests were performed towards porous rock samples before and after applying Aquo-Siloxane Method, and the diffusion phenomena was visualized and analyzed by μ-focus X-ray CT. It was found that diffusion...

... tests at rock samples and shear tests along discontinuities. 1 INTRODUCTION In the city of Mendig, Germany, large pillar-supported mining openings are remaining from mining activities mainly during the 19th and 20th century. The mining openings are located in a depth of 15–20 m below the current...

... application prototype rock strength borehole probe reservoir geomechanics metamorphic rock borehole State University rock sample 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 Applications of rock...

... thermal conductivity bedding plane rock sample anisotropy ABSTRACT: New modifications of the optical scanning technique provide non-contact measurements of rock thermal conductivity and volumetric heat capacity on full-size core samples, core plugs, broken cores and other types of rock samples...

... & Guney (2010) comprises data set containing 143 rock sample compiled from previous studies, ranging from weak rock to very strong rocks, including different types from different areas. 3 THE DATA USED IN THE STUDY Results of UCS and BTS measurement on 1842 different rock types which were tested over...

... of tilting rate on basic friction angle results, as well as the impact of previous wear on the surfaces when carrying out various tilt tests on the same surfaces. An experimental program including 5 tilting rates, 5 joints for every rate and 5 tests for every joint was carried out in rock samples...

... is the Schmidt hammer. Researchers have developed many approaches to use Schmidt hammer. One of these approaches is the measuring surface from points which far away from another point just as diameter of flange of Schmidt hammer. In this study, eight carbonate rock samples from different regions of Turkey...

... ABSTRACT: This paper presents static and dynamic experimental characterization of quartzite rock subjected to static unconfined compressive strength test and dynamic split Hopkinson pressure bar (SHPB) tests. The dynamic compression tests on rock samples are performed at strain rates from 10...

... to cylindrical rock samples with cylinder axis aligned along the axis of loading. The rock samples indicate altogether brittle failure. The induced faces of failure show very rough surfaces with correspondingly high friction angles, so that the broken rock samples do not disintegrate completely, even not after...

...-Euclidean continuum model is applied for description of the zonal stress field around a cylindrical opening. The phenomenological parameters of the model are determined on the basis of comparison with experimental data. The anomalous deformation behavior in the cylindrical rock sample is analyzed...

... need additional parameters and functions, which can be deduced from lab test results. The authors explain these modifications and validate the proposed criterion by using published data of sedimentary and metamorphic intact rock samples. Finally, the authors study the correlation between...

... Abstract The paper describes the results of hard rock samples testing (Khibiny massif, Kola Peninsula) under uniaxial compression. We have established the main failure modes of the samples with height-to-diameter ratios 2:1 and 1:1. The influence of the structure features and texture...

... and are generated with the Intercept-Method (Launeau & Robin 1996) on uniaxial compressed rock samples under different load levels. In addition, conclusions will be drawn for an applicability of the Intercept-Method for geotechnical issues and whether the data are sufficient if they are registered after...

... which is called rebound coefficient and indexed as Q. In this study, classical and digital Schmidt hammers were used on seven different rock samples. Additionally, uniaxial compressive, uniaxial tesile and point load tests were conducted on same rock samples. A comparative study has been performed...

... with raise bore machines are presented. Penetration index is obtained by pushing one bit upon a rock sample under a hydraulic press in the laboratory. Borehole samples obtained from Eti Copper Kure Asikoy underground mine located in Turkey were first tested for defining some of the basic physical...

... rock sample under constant thrust force. The abrasiveness according the norm ON 44 1121 will be termed as „pin rock abrasiveness" FV. The experimental results of the determination of FV abrasiveness were compared to the values of the CERCHAR Abrasivity Index (CAI). 1 The Effect of Anisotropy on Rock...