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Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-018
... properties of chips. With this respect, one hundred individual edge chipping tests were carried out on a homogenous tuff sample for the selected testing condition. Accordingly, basic statistical properties (mean, standard deviation, coefficient of variation) of test results have been investigated. Besides...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-011
... poor cave conditions, and thus the potential for dynamic loads. Reservoir Characterization Upstream Oil & Gas metals & mining strength standardized regression coefficient coefficient machine learning structural geology correlation pillar factor safety Maleki mechanics...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-133
... emission signals. Each signal is associated with an event of destruction (initiation of a new microcrack or growth of an existing one); for this reason, interpretation of such stochastic information uses: metals & mining wave velocity coefficient Nazarova Upstream Oil & Gas inverse...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-054
... ultrasonic waves velocity, thermal conductivity and volumetric heat capacity. well logging silesian granite coefficient kožušníková Reservoir Characterization granite sample porosity granite Upstream Oil & Gas ultrasonic wave velocity procedia engineering 191 log analysis physical...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-078
...) component as it is shown in the following equations: where = dynamic coefficient; f = density of the debris in kg/m3; vf = flow velocity in m/s; k = earth pressure coefficient; g = acceleration gravity in m/s2; z = vertical position of the point under consideration; hf = flow thickness in m; h(t) = 2...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-043
... re-calculated by using proposed the coefficient. 1 INTRODUCTION Characterizing the tensile strength of rocks thus is of great importance in many engineering and geophysi- cal applications (Dai et al. 2010). The tensile strength is a key parameter for determining the load bearing capacity of rocks...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-044
... & Dewitt 1990, Hasan 1999, Canakci et al. 2007). unfilled travertine sample specimen travertine sample Upstream Oil & Gas thermal parameter change coefficient specific heat capacity travertine Reservoir Characterization ts cycle thermal property investigation thermal conductivity...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-110
... coefficients of these empirical relationships. The methodology was applied to case studies (France). The application of these relationships can help to explain the collapse of Clamart mine (Paris). Generally, and in the absence of data, it will certainly be more prudent to use the relationships available...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-145
... performance of the impact hammer, a single regres- sion analysis was conducted using IBM SPSS (2013). The coefficient of determination (R2) was chosen to be used for comparing the goodness of fits. The relation between RQD and IBR is presented in Equation 2. A moderate relationship (R2 = 0.78) between RQD and...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-138
... LIDAR measurements as well as aerial photos are used to prepare slope profiles. According to previous rockfall evi- dences, back analyses are performed to identify the slope surface characteristics like restitution coefficients. For each profile, different rock size and shapes are simulated and...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-213
... of water for carbon capture and storage (CCS) study. The effective pressure law for permeability is associated with curved iso-permeability lines. We can express the effective pressure as P eff = P c — χ(P c ,P p )P p , where the coefficient χ corresponds to the slope of iso-permeability line...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-050
... uniaxial compressive strength vesicular basalt Turkey rock material vesicle uniaxial compression strength test void ratio porosity coefficient core 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...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-089
... jack coefficients manufactured by INTERFELS Corporation. In typical practice the large flat jack (LFJ) coefficients proposed by LNEC is used to calculate the final modulus data. These coefficients are also used to calculate the modulus data from ELFJ, which leads to significant errors. In this study a...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-156
... stress coefficient machine learning Upstream Oil & Gas back analysis Narmab Water Conveyance Tunnel Artificial Intelligence average horizontal intelligent back analysis rock mass elasticity module artificial neural network tunnel ABSTRACT: As substitution method, artificial neural...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-176
... coefficient harmonic component Fourier analysis RocFold case study ABSTRACT: The first step to determine mechanical and hydraulic properties of rock masses is the evaluation of geometrical characterizations of discontinuities. Discrete Fracture Network models have been developed to model the...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-177
... adapted easier than field tests. machine learning schmidt hammer rebound number data laboratory neural network correlation coefficient application Artificial Intelligence roof rock artificial neural network estimation neuron compressive strength Upstream Oil & Gas specific...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-073
... joint coefficient Reservoir Characterization Upstream Oil & Gas CNL condition dilation Wellbore Design normal stress boundary condition dilatation capacity test procedure shear test stiffness shear strength initial stress wellbore integrity resistance direct shear test procedure...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-037
... uncertainties. This paper aims to assess and analyse rockfall susceptibility along the main road leading to the Giants Castle Nature Reserve, in the northern Drakensberg, South Africa. runout zone Rockfall Hazard rockfall susceptibility analysis structural geology Simulation coefficient road...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-085
... sparse and limited to 2D profiles measurements. Therefore, many existing roughness parameters are based on 2D profiles including the Joint Roughness Coefficient (JRC), maximum asperity angle (Patton 1966) and different statistical parameters, e.g. roughness profile index or average angle (Papaliangas...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-056
... Abstract In this study, the effects of textural properties of grains such as aspect ratio, roundness, and diameter on the LCPC abrasivity coefficient (LAC) were investigated for six different coarse-grained igneous rocks. The LAC was correlated to the abrasive mineral contents (AMC) and a good...

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