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1-20 of 47
Keywords: frequency
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Proceedings Papers
A Hybrid FEM/DEM Approach to Estimating Rock Block Breakage Due to Gravity Free-Fall
Available to Purchase
Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-097
... reservoir characterization practice iop publishing iop conf fragmentation reservoir simulation reservoir geomechanics rock engineering block-to-block interaction breakage splitting roughness frequency theory hopper Mechanics and Rock Engineering, from Theory to Practice IOP Publishing IOP...
Proceedings Papers
Salt Weathering and Ultrasonic Pulse Velocity: Condition Assessment of Salt Damaged Porous Limestone
Available to Purchase
Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-069
... engineering frequency graph ultrasonic non-destructive digital indicating tester environmental science 833 amplitude geologist limestone crystallisation practice iop publishing iop conf theory procedure geotron instrument pundit Mechanics and Rock Engineering, from Theory to Practice IOP...
Proceedings Papers
Rock Grouting In Copenhagen Limestone – The Cityringen Experience
Available to Purchase
Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-092
... Design paulatto borehole Reservoir Characterization Upstream Oil & Gas criteria evaluation permeability test fracture flow in porous media Fluid Dynamics sune carstensen procedia engineering 191 Copenhagen Limestone upper copenhagen limestone hydraulic fracturing frequency enrico...
Proceedings Papers
Measuring, Monitoring and Prediction of Vibration Effects in Rock Masses in Near-Structure Blasting
Available to Purchase
Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-064
... the existence of the strong relation between PPV and damage to structures has been well established. Besides PPV, the frequency is one of the most important factors controlling the response of structures. This paper presents a case history of Olympic Stadium renovation in Helsinki, Finland with a focus...
Proceedings Papers
Estimation of Bond Quality Around Rock Bolts Using Ultrasonic Wave
Available to Purchase
Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-159
... stability of the rock bolt. Accordingly, authors developed the system device using ultrasonic waves with different frequency levels, which can detect and display small reflective signals in order to evaluate the extent of mortar filling. In this paper, a basic idea to evaluate the mortar filling quality...
Proceedings Papers
Risk Management: Blasting Rock Near Concrete Inside a Subway Station in a Densely Populated Urban Environment
Available to Purchase
Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-205
..., – Maintain and protect the struts of walls during the blasting. risk management frequency rock slab Upstream Oil & Gas subway station urban environment diaphragm wall concrete diaphragm wall ground transportation Densely alah station diameter executive schedule hydraulic rock...
Proceedings Papers
Passive Seismic Monitoring of Potentially Unstable Rock Masses
Available to PurchaseC. Colombero, C. Comina, S. Vinciguerra, D. Jongmans, L. Baillet, A. Helmstetter, E. Larose, J. Valentin
Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-199
... frequencies of the investigated volume. Ground motion at these frequencies was found to be controlled by the main fractures observed at the site and numerical modelling is currently under development for geomechanical and modal analysis of the site. Both spectral analysis and cross-correlation of seismic...
Proceedings Papers
Blast Wave Propagation Across Jointed Rock Masses and Its Influence on the Ground Motion
Available to Purchase
Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-181
... the time shifting function is considered. The mathematical expressions for the particle velocity on the ground surface are subsequently deduced. Finally, parametric studies are carried out, which includes the influences of fault stiffness, the incident angle and the frequency of incident waves on the peak...
Proceedings Papers
Seismic Vulnerability of Historic Monuments: A Rock Mechanics Perspective
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Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-008
... Reservoir Characterization Engineering frequency Upstream Oil & Gas reservoir geomechanics thermally Rock mechanics vulnerability mamshit dda model displacement Earthquake historic monument DDA time step size masonry structure Keystone numerical analysis amplitude...
Proceedings Papers
Dynamic Numerical Analysis of a Stepped-Planar Rock Slide in Central Chile - Preliminary Results
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Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-105
... topography. The rock slope is subjected to several harmonic signals with variable frequency and amplitude, and the slope response is evaluated. 1 INTRODUCTION Subduction of the Nazca plate under the South American plate is responsible of numerous earthquakes due to the stress accumulation and relief...
Proceedings Papers
Seismic Response of Numerical Analysis and Field Measurement in Oya Tuff Underground Quarry
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Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-129
... to represent site effect around them. The results of FFT analyses showed that natural frequency from field measurement ranges between 5 Hz and 10 Hz. The authors first clarify the frequency characteristics of the quarries with continuous monitoring. Then, the authors consider the influence to seismic wave on 2...
Proceedings Papers
Seismic Induced Rock Landslides using Continuum-Based Models
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Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-148
... Upstream Oil & Gas CEL application chi-chi earthquake Eulerian material Engineering MPM frequency increment rock landslide Material Point Method landslide contact algorithm Earthquake integration algorithm Continuum constitutive model equation deformation Abstract...
Proceedings Papers
Earthquake Induced Rockfall Along Cut Slopes - A Case Study from Luhri, Himachal Pradesh, India
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Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-184
...). Studies have shown a good correlation between the landslides density and the areas of strongest ground motion, while their frequency declines on moving away from the epicenter (Meunier et al. 2007). Sepulveda et al. (2005) studied the rock slope failure due to topographic amplification of strong ground...
Proceedings Papers
Investigations in Cutting Granite with Geometrically Defined Cutting Edge and Ultrasonic Assistance
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Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-131
... on carbide metal and polycrystalline diamond cutting tools with geometrically defined cutting edges. The ultrasonic frequency was maintained at 20 kHz. Different oscillation amplitudes up to 25 µm were applied to reduce process forces in comparison to the conventional machining. The observation...
Proceedings Papers
Rockfall Monitoring System for Improving Road Safety
Available to PurchaseZ. Agioutantis, S. Mertikas, A. Daskalakis, A. Tripolitsiotis, G. Kritikakis, E. Apostolou, C. Steiakakis, G. Kaplanidis
Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-158
... the suitability of geophones to detect ground vibration caused by rock- falls, b) investigate the spacing between geophones, c) evaluate the applicability of empirical equations to determine the energy decay rate, and d) determine the frequency range generated by rockfalls. A number of multi-parametric...
Proceedings Papers
Monitoring of the Geomechanical State of Rock Mass using Complex of Satellite Geodesy
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Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-156
... and composed of numerous alternating movements with different frequencies and amplitudes move in cycles (Sashourin 2001). Upstream Oil & Gas kazchrome donskoy ore mining Reservoir Characterization frequency movement process metals & mining structural geology displacement amplitude...
Proceedings Papers
Critical Review of Eurocode-7 Regarding Monitoring Rock Masses by Field Instrumentation: Devices and Data Analysis
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Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-246
... monitoring program. The application of new nanotechnolo- gies in the geotechnical and rock mechanic fields has increased the amount of acquired information both in space and frequency. Along with the awaited introduction in the EC7 of specific considerations regarding geo- structural characterization...
Proceedings Papers
Correlations Between Static and Dynamic Elastic Modulus of a Calcarenite Heated at Different Temperatures
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Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-018
...:) involved in the distinct techniques. Other authors (Kolesnikov, 2009, Ciccotti & Mulargia, 2004) consider that the static test is a dynamic test at a very low frequency, and they highlight the nonlinear elastic response to different associated frequencies (f).Kolesnikov (2009) uses the Kjartansson...
Proceedings Papers
Experimentally-Based Relation Between Dynamic and Static Elastic Moduli of Various Sandstones and a Quartzite
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Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-007
... sandstones and a quartzite M. Alber Engineering Geology/Rock Engineering, Ruhr-University Bochum, Bochum, Germany ABSTRACT: Dynamic moduli of rocks are higher than their static moduli. The difference is attributed to different frequencies, strain and stress amplitudes when conducting static and dynamic...
Proceedings Papers
Infrared Thermography Methodology Applied to Detect Localized Rockfalls in Self-Supporting Underground Mines
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Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-129
... families of joints and the surface of the gallery, both the problems of identification and support have also been studied in considerable depth and solutions found (González et al. 2005). frequency information operation rock mass metals & mining wavelength environmental parameter...
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