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Keywords: instability
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Proceedings Papers
Investigation into the Influence of Macro-Scale Geometry on the Stability of Underground Excavations in Layered Rock Masses
Available to Purchase
Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-099
... the stability of the underground opening. For the purposes of this research, we are investigating the influence of macro-scale rock discontinuities to assess potential excavation instabilities across a range of different discontinuity patterns that may be encountered when excavating within layered rock masses...
Proceedings Papers
Considerations on Failure Mechanisms of Rock Slopes Involving Toppling
Available to Purchase
Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-004
..., rotational and toppling failure as potential instability mechanisms. Whereas the three first types involve sliding associated to different geometries of the unstable element or mass, toppling often involves also sliding and very complex geometries of multiple elements. In this sense, toppling should...
Proceedings Papers
Stability Assessment of Rock Slopes Combining Slope Mass Rating and Qslope Classification Systems: A Case Study in Cerro San Eduardo (Guayaquil, Ecuador)
Available to Purchase
Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-077
... stability analysis. geologist practice iop publishing iop conf sedimentary rock rock type geological subdiscipline structural geology reservoir geomechanics stability theory guayaquil instability environmental science 833 cerro san eduardo breakage ecuador government reservoir...
Proceedings Papers
Assessment of Kinematic Rock Slope Failures in Mudurnu Valley, Turkey
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Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-057
... Abstract Slope instabilities are one of the most frequent natural hazards capable of causing severe failures both at regional and large scales. Mudurnu, which is settled on a steep valley, is affected by regional rock slope instabilities. These instabilities constitute a hazard and create...
Proceedings Papers
Monitoring and Risk-Control of Large-Scale Toppling Failures – a Case Study from Ok Tedi
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Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-173
... Belfast; the West Wall is approximately 2,000 m long, 1,000 m wide and 500 m deep. In the past 4 years, the West Wall experienced numerous instabilities including two large-scale pit wall failures (referred to as ‘chasms’) and additionally several complex failures of varying scales across the entire...
Proceedings Papers
The Integrated Usage of Ground-Based and Satellite SAR, Along with 3D Structural Modelling in Titania: Creating a Link Between Short and Long - Term Slope Stability Hazard Management
Available to Purchase
Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-144
... Abstract Mining is a high risk business and for every modern mining industry, the main aim of its open pit design is to create walls that will be stable for the life of the open pit, which in some cases may extend beyond the closure. As a result, any kind of instability should be manageable...
Proceedings Papers
Rock Mechanics and Engineering for the Klein Matterhorn Glacier Paradise (Zermatt, Switzerland)
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Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-151
... to address various problematics related to superficial and shallow rock instabilities inside and outside the construction area. Moreover, the predominance of permafrost conditions required to adapt the techniques for the execution. While the first cableway from the north-side has been operational since...
Proceedings Papers
Multiphysics Laboratory Tests for Modelling Gravity-Driven Instabilities at Slope Scale
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Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-019
... Abstract Ischia Island (Italy) experienced slope instabilities during the Holocene that occurred at different scales, from shallow mass movements up to large rock and debris avalanches. These events were strictly related to volcano-tectonic activity and the presence of a well-developed...
Proceedings Papers
The Use of Remote Sensing Techniques for Monitoring and Characterization of Slope Instability
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Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-020
... to be used for different purposes. Artificial Intelligence Reservoir Characterization spatial reasoning Upstream Oil & Gas metals & mining accuracy instability Spatial analysis photogrammetry slope instability application procedia engineering 191 point cloud information geometry...
Proceedings Papers
Structurally-Related Hangingwall Alterations Contributing to UG2 Stope Instabilities at Lonmin
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Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-161
... and prevent future instabilities. This paper presents the investigations and interpretations of the structural geology, the impact on the stope stability, pillar behaviour and support. 1 INTRODUCTION Rowland Shaft is one of Lonmin's first generation vertical shafts, extracting both the Merensky and Upper...
Proceedings Papers
Preliminary Relationship Between Weathering Behavior Profiles and Laboratory Slake Behavior of Carbonatic Flysch Rocks
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Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-177
... ABSTRACT: Various studies indicate that most of the slope instabilities affecting heterogeneous rock masses are related to differential weathering and erosion of the lithologies that outcrop in the slope. However, not all these rocks behave similarly, exhibiting considerable differences...
Proceedings Papers
Arenal Deeps: Application of Numerical Methods to 2D and 3D Stability Analyses of Underground Excavations
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Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-149
.... Empirical methods enabled straightforward determination of the need to include an intermediate pillar. A 3D boundary element model indicated that stress concentration in the roof was the main driver for instability. The 2D finite element model provided a FoS for roof failure of 1.20, considered adequate...
Proceedings Papers
Managing Landslide Risks Associated With Erosion-Driven Slope Instabilities Using Near Real-Time Deformation Monitoring Systems
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Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-192
... and highly fractured rock, the erosion rapidly undercuts geological structures; enabling large instabilities to occur. When uncontrolled, the problem progressively worsens leading to the development of large chasms along major geological structures on pit slopes. Chasms up to 450 m high and 250 m wide have...
Proceedings Papers
Tunneling to Safety - Case Study Based Risk Management of Underground Facilities
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Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-210
... response. These uncertainties are translated into hazards of potential rock mass instabilities, necessitating the need for measures to manage risk by eliminating, mitigating, accepting or transferring it. Each underground construction has varying degree of risk based on its actual site conditions...
Proceedings Papers
A Modeling Study of Intersection Lines and Points as an Assessing Instability of Rock Mass
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Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-091
...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 A modeling study of intersection lines and points as an assessing instability of rock mass A. Turanboy Necmettin Erbakan University, Konya, Turkey E...
Proceedings Papers
Suggestion for a Documentation of Unexpected Standstills in TBM-Tunnelling
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Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-187
... to the category others . For all other projects, maintenance is considered in excavation (excavation period). Categories of standstills Ground Inflow of gas Inflow of water Instability of excavation walls, squeezing Instability of excavation face Overbreak Technique Technical defect of construction site supply...
Proceedings Papers
Back Analysis and Radar Interferometry Monitoring in a Large Open Pit Slope
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Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-151
... of an open pit mine, to follow and detect movement intensities ranging from millimetric to metric scales. Several vulnerable parts of the mine have been studied and monitor- ing of these very small to very large instabilities has provided valuable information for risk and exploitation management at the mine...
Proceedings Papers
Principles and Methodologies for the Design of Hydroelectric Large Underground Caverns
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Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-131
... < 50, the medium is discontinuous: the failure occurs by block instability. One of the first steps of the analysis is the identification of the fractures families and of the joints properties; For Cf < 5 and cm/ 0 < 2, the failure could occur close to the wall of the cavity, by spalling of the rock...
Proceedings Papers
Stability Analysis of a Room & Pillar Hematite Mine and Techniques to Manage Local Instability Problems
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Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-188
... of the mine incipient instability problems were detected. Simplified stabilization methods were proposed, analysed and implemented, including the construction of a timber crib and the perimeter cabling of not-so-stable pillars in order to avoid rock-fall and progressive failure and to slightly increase pillar...
Proceedings Papers
Slope Stability Control of a Coal Mine During the Filling of the Artificial Lake
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Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-115
... Abstract The influence of water on slope instability can generate forces that may produce a total or partial terrain collapse. An exhaustive geotechnical, geological and hydrogeological analysis was carried out during the life of the mine and served a foundation for consecutive estimating...
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