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Keywords: criteria
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Proceedings Papers

Paper presented at the ISRM International Symposium - 10th Asian Rock Mechanics Symposium, October 29–November 3, 2018
Paper Number: ISRM-ARMS10-2018-100
... key issues shall be addressed in accordance with Eurocode EC 7 (ӦNORM EN 1997–1): Design concept for determining excavation and support Determination of safety relevant parameters, including definition of expected behavior and criteria for the assessment of the system stability on the basis of...
Proceedings Papers

Paper presented at the ISRM International Symposium - 10th Asian Rock Mechanics Symposium, October 29–November 3, 2018
Paper Number: ISRM-ARMS10-2018-243
... other feasible method, drilling & blasting using high explosives along with the latest electronics blasting system would be the most practical and feasible way to remove the bedrock in the shortest time frame. Reservoir Characterization criteria isrm international symposium asian rock...
Proceedings Papers

Paper presented at the ISRM International Symposium - 10th Asian Rock Mechanics Symposium, October 29–November 3, 2018
Paper Number: ISRM-ARMS10-2018-206
... found that, overall, fitting results with Hoek-Brown (HB) criteria are more accurate than those with the Mohr-Coulomb (MC) criterion for the dynamic compression test results. Finding in the test confirms that HB strength envelope under static conditions can be used to describe dynamic strength behaviors...
Proceedings Papers

Paper presented at the ISRM International Symposium - 8th Asian Rock Mechanics Symposium, October 14–16, 2014
Paper Number: ISRM-ARMS8-2014-211
... mechanics symposium arms8 disaster recovery work colluvial deposit iya district stability gp automatic monitoring system contingency planning criteria slope failure large-scale colluvium 8th Asian Rock Mechanics Symposium ARMS8 14-16 October 2014, Sapporo, Japan Monitoring the Stability of a...
Proceedings Papers

Paper presented at the ISRM International Symposium - 8th Asian Rock Mechanics Symposium, October 14–16, 2014
Paper Number: ISRM-ARMS8-2014-019
... criteria developed above, and hence the safe maximum withdrawal rate of the compressed-air can be determined. Upstream Oil & Gas asian rock mechanics symposium arms8 rock salt dilation Reservoir Characterization criterion shear strain Loading Rate reservoir geomechanics cavern...
Proceedings Papers

Paper presented at the ISRM International Symposium - 8th Asian Rock Mechanics Symposium, October 14–16, 2014
Paper Number: ISRM-ARMS8-2014-020
... Abstract The objective of this study is to determine rock mass strength and deformability in the laboratory by simulating joints in sandstone specimens. The results are used to assess the predictive capability of rock mass strength criteria developed by Hoek-Brown, Ramamurthy-Arora, Yudhbir...
Proceedings Papers

Paper presented at the ISRM International Symposium - 8th Asian Rock Mechanics Symposium, October 14–16, 2014
Paper Number: ISRM-ARMS8-2014-275
... additional data between measurements and regulate the input to constant time intervals. Secondly, statistical techniques are used to weed out predicted data points that are outside preset parameters. Short-term predicted values that satisfy with clear statistical criteria (low co-variance or low standard...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - 7th Asian Rock Mechanics Symposium, October 15–19, 2012
Paper Number: ISRM-ARMS7-2012-001
... ABSTRACT In this paper, several new developments regarding the failure, fracture and fragmentation of rocks will be discussed. The first topic discussed is the development of true-triaxial failure criteria that involve all three principal stresses. The next topic is a new approach to modelling...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - 7th Asian Rock Mechanics Symposium, October 15–19, 2012
Paper Number: ISRM-ARMS7-2012-117
... index and lining uniaxial compressive strength have the most significant effects on the convergence and lining load criteria, respectively. Increase of 0.2 in the coefficients of variation of geological strength index and lining uniaxial compressive strength can result in about 30 and 8% increase in the...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - 7th Asian Rock Mechanics Symposium, October 15–19, 2012
Paper Number: ISRM-ARMS7-2012-138
... point estimate method reservoir geomechanics reserves evaluation institute technology Kramadibrata soft rock slice method engineering department Rock mechanics Symposium Hoek FP value stability curve probability Reservoir Characterization drilling operation management criteria...
Proceedings Papers

Paper presented at the ISRM International Symposium - 6th Asian Rock Mechanics Symposium, October 23–27, 2010
Paper Number: ISRM-ARMS6-2010-127
... fields), we have an upper bound for ultimate failure load. So that if this loads affect the structure, it will certainly collapse. It is quite difficult to directly introduce criteria into the plastic limit analysis. A numerical technique based on the nonlinear mathematical programming will be developed...
Proceedings Papers

Paper presented at the ISRM International Symposium - 6th Asian Rock Mechanics Symposium, October 23–27, 2010
Paper Number: ISRM-ARMS6-2010-133
... decision-making process is inevitable with regard to many geological and geotechnical variables and uncertainties and also unpredictable ground conditions during tunneling operation. So, use of an efficient decision making technique which can take into account several criteria in such conditions is...
Proceedings Papers

Paper presented at the ISRM International Symposium - 6th Asian Rock Mechanics Symposium, October 23–27, 2010
Paper Number: ISRM-ARMS6-2010-103
.... Compared to the other two failure criteria, the Inscribed Drucker-Prager and the Mohr-Coulomb are conservative as they predict higher well collapse pressure than the other two criteria, i.e. the Modified Lade and the Circumscribed Drucker- Prager. On the other hand, the latter provides very optimistic...
Proceedings Papers

Paper presented at the ISRM International Symposium - 6th Asian Rock Mechanics Symposium, October 23–27, 2010
Paper Number: ISRM-ARMS6-2010-019
... all levels of σ3, showing the mean misfit = 15.4 MPa. The Coulomb and Hoek and Brown criteria cannot describe the salt strengths beyond the condition where σ2 = σ3, as they cannot incorporate the effects of σ2. Both circumscribed and inscribed Drucker-Prager criteria severely underestimate σ1 at...
Proceedings Papers

Paper presented at the ISRM International Symposium - 5th Asian Rock Mechanics Symposium, November 24–26, 2008
Paper Number: ISRM-ARMS5-2008-164
... [12–15] are to name a few. There are also some theoretical fracture criteria for assessing the load bearing capacity of brittle cracked materials under mixed mode loading. Reservoir Characterization structural geology BD specimen Wellbore Design criteria hydraulic fracturing criterion...
Proceedings Papers

Paper presented at the ISRM International Symposium - 5th Asian Rock Mechanics Symposium, November 24–26, 2008
Paper Number: ISRM-ARMS5-2008-016
... calculated for the AFPB specimens of different crack lengths. It is shown that the obtained mixed mode fracture data can be predicted well by means of the available fracture criteria. The well known maximum tangential stress criterion gives better. 1. Introduction Cracks, flaws, natural fractures and...
Proceedings Papers

Paper presented at the ISRM International Symposium - 5th Asian Rock Mechanics Symposium, November 24–26, 2008
Paper Number: ISRM-ARMS5-2008-017
... radius, the angle of pure shear deformation varies between 20o and 35o. The shear fracture test data obtained for a rock material using the proposed sample is in good agreement with the classical fracture criteria. The ratio of shear fracture resistance to tensile fracture resistance in the tested...
Proceedings Papers

Paper presented at the ISRM International Symposium - 5th Asian Rock Mechanics Symposium, November 24–26, 2008
Paper Number: ISRM-ARMS5-2008-060
... in situ stresses and in expressions involving induced stresses. The internal friction angle (φ) for rock masses can be determinable using Geological Strength Index - GSI (Hoek et al, [6]). Originally, the GSI was developed for the Hoek-Brown failure criteria, but knowing the Hoek-Brown material...
Proceedings Papers

Paper presented at the ISRM International Symposium - 5th Asian Rock Mechanics Symposium, November 24–26, 2008
Paper Number: ISRM-ARMS5-2008-086
... criteria). -Analytical methods (e.g. Duncan-Fama approach (1993) using Mohr-Coulomb criteria). In order to estimate the instability of each section of the tunnel, the first step is to determine that either the rock mass should be considered as continuum or dis-continuum material. Reservoir...

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