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Keywords: rock mass strength
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Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-015
... for the rock mass strength predictions instead of empirical approaches in practice. 1 INTRODUCTION Due to the presence of discontinuities preparation of core samples to perform laboratory tests on the rock mass into which the engineering structures are excavated is very difficult and not feasible...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-173
... Abstract The paper discusses the reasons for the introduction of new mining system. Details of investigations to determine in situ rock mass strength are presented. Back analysis of existing mine tunnels based on visual tunnel observations, diamond drill core analysis and numerical simulations...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-145
... in the crown up to the surface forming a chimney is an often monitored collapse phenomenon. This is a very critical failure mechanism, especially in horizontally layered rock. As it was observed during various tunnel excavations in the past, even little differences in the rock mass strength led to a collapse...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2010, June 15–18, 2010
Paper Number: ISRM-EUROCK-2010-003
... and propagation and thus are only applicable to the right of the spalling limit (Figure 3a). To the left of the spalling limit, standard shear failure envelopes tend to over-predict the in-situ rock mass strength by neglect- ing the strength lowering process due to extension fracturing or spalling...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2009, October 29–31, 2009
Paper Number: ISRM-EUROCK-2009-116
... susceptible to this mode of subsidence development—depending on the height of the collapse and the rock mass strength of the materials within the roof horizon. structural geology mechanism rock mass strength design criteria metals & mining coal subsidence event MPa strength surface...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2009, October 29–31, 2009
Paper Number: ISRM-EUROCK-2009-062
... quality of the rock mass. The goal of this paper is to put the deformation modulus—rock mass quality dependence into a framework of damage mechanics and to find a connection with the unconfined rock mass strength —quality relation. The rock mass characterizations are interpreted as damage classifications...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 96, September 2–5, 1996
Paper Number: ISRM-EUROCK-1996-040
... decisions. When performing analytical deformation analysis, for example in order to design a support system for a tunnel, the rock mass parameters, i.e. Young's modulus and rock mass strength, are very important. As these parameters are subjected to large uncertainties, mainly in the form of spatial...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 96, September 2–5, 1996
Paper Number: ISRM-EUROCK-1996-090
... relation roof centerline utilization rate uniaxial rock mass strength reservoir geomechanics strength rock mass strength support measure Upstream Oil & Gas TBM stability excavation Reservoir Characterization utilization penetration tunnel mass strength prediction TBM...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 93, June 21–24, 1993
Paper Number: ISRM-EUROCK-1993-130
... area reservoir geomechanics displacement cavern height cavern size diagram wall displacement span rock quality power cavern construction deformation rock mass strength rock mass rock mass quality Eurock '93, Ribeiro e Sousa & Grossmann (eds) © 1995 Balkema, Rotterdam, ISBN 90 5410 339...

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