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Proceedings Papers

Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-114
... Engineering Geological Model had to be made to ensure that Analytical Model could both meet the constraints of the project programme, and predict the likely loading and deformation that might occur. One of the main simplifications was in terms of the discontinuity spacing. This paper presents a summary...
Proceedings Papers

Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-006
... the dilatancy directly over the joint. Therefore, the displacement transducers must be in locations where the risk is that additional displacements originating from deficiencies in the test system will be measured causing too low normal loads to be applied. Herein, this issue is investigated in a new 5 MN...
Proceedings Papers

Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-089
... Abstract Time-dependent rock deformation is considered to precede dynamic failure in many rock-engineering projects and natural geohazards. In order to understand long-term performance of brittle rocks, we gather mechanical load, strain, acoustic emission (AE) and digital image correlation...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-004
... for TBM tunneling from cutter force & face monitoring to tubbing design R. Galler & R. Wenighofer Chair of Subsurface Engineering, Department ZaB-Zentrum am Berg, Montanuniversität Leoben, Austria robert.galler@unileoben.ac.at Abstract The loading on the tools of a TBM can usually only be estimated...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-095
... (Indian School of Mines), Dhanbad 826004, India bDepartment of Earth Sciences, Indian Institute of Technology Bombay, Mumbai 400076, India Abstract Two dimensional plain strain distinct element method has been used to analyze a curved slope under static and dynamic loading condition. Most vulnerable cross...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-043
.../j.proeng.2017.05.189 ScienceDirect Available online at www.sciencedirect.com Symposium of the International Society for Rock Mechanics Deformational Response of Rocks to Uniaxial, Biaxial, and Triaxial Loading or Unloading Regimes Ivan Janeþeka,b Deepak Amban Mishraa aInstitute of Geonics of the CAS...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-088
... Abstract The article deals with the use of computed X-ray radiography to visualize the development of the fracture process zone in the rock samples. For radiographic observations during the three-point bending loading, glauconitic sandstone from the Řeka quarry (sometimes also referred...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-099
....2017.05.244 ScienceDirect Available online at www.sciencedirect.com Symposium of the International Society for Rock Mechanics Numerical Analysis of Rock-Socketed Piles under Combined Vertical-Lateral Loading A.P. Singha, T. Bhandarib, R. Ayothiramana*, K. Seshagiri Raoa aDepartment of Civil Engineering, IIT...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-074
... and pillar panel in coal mining in the world [1 5]. As there is no relevant experience of using this method in the Upper Silesian Coal Basin, an extensive monitoring system has been implemented to enable the mining trial to continue safely. The monitoring is focused on the load-bearing capacity of the coal...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-130
... hand, the mechanical properties of a discontinuous rock mass are evaluated using in-situ rock tests of large-scale specimens.These tests include a plate loading test (PLT) and rock shear test (RST). In the past, several cyclic loading PLTs and RSTs for in-situ rock masses were attempted to evaluate...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-146
... interaction zone under various cyclic loading types. Research results showed the developed Fracture Process Zone (FPZ) under cyclic loading is much bigger than the FPZ developed under monotonic loading even with the use of lower forces. 1 INTRODUCTION 1.1 Hard rock cutting Billions of tons of rock and ore...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-161
... unstable ground conditions. A fall of ground at Lonmin s Rowland Shaft identified abnormalities with reference to the hangingwall conditions of the stope area as well as pillar and support behaviour.This resulted in premature loading of the grout pack support and fracturing of the pillar edges. The support...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-143
...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 Total load-bearing capacity of yielding steel arch supports P. Horyl & P. Mar álek VSB-Technical University of Ostrava, Czech Republic R. n upárek...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-020
... ABSTRACT: Series of uniaxial compression tests combining constant strain rate and four patterns of cyclic loading were carried out on Kimachi sandstone to clarify the timing of rock failure. It was found that rock failure timing was random in triangular, reverse triangular and small amplitude...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-076
... rock medium, when a rockbolt is under pullout loading, the rock at the bolt ends may undergo fracturing. The frac- ture pattern of the rock could be demonstrated by the reinforcement angle. Only the rock located between the fracture plane and the bolt is influenced by the bolt (Li 2006...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-012
... ABSTRACT: To investigate the failure of non-continuous jointed rocks under compression loading, many researchers have performed uniaxial and biaxial compression tests. In this paper, I simulated numerically the behavior of artificial jointed rock under axial loading and compared...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-002
...: Microcrack development (inter- and intra-granular fracturing) Lifetime prediction of rocks under static long-term loading Techniques to duplicate microstructure of rocks (stochastic approaches and digital image processing) Influence of microstructure on poroelasticity Micromechanical back...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-023
.../Rock Engineering, Ruhr University Bochum, Germany ABSTRACT: Determination of crack initiation CI and crack damage CD as well as the understanding of failure mechanisms like spalling of rocks is still an issue to solve. Several methods are available for estimating CI and CD under uniaxial loading...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-068
... on coal burst occurrence using numerically efficient nonlinear Finite Element Models. A variety of loading conditions, boundary conditions, and interface properties were evaluated to determine their effects on failure of single and group of pillars. The ultimate aim here is to undertake a significant...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-125
... significant damage to the hydroelectric structures and the underlain rock mass thus leading to enormous loss for the nation. Hence, the rock mass supporting the structures should be characterized so that it can resist any unanticipated load in addition to the usual structural load and load from...

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