LICENTIATE THESIS. Evaluation of rock mass strength criteria. Catrin Edelbro
|
|
- Deirdre Singleton
- 6 years ago
- Views:
Transcription
1 LICENTIATE THESIS Evaluation of rock mass strength criteria Catrin Edelbro Department of Civil and Environmental Engineering Division of Rock Mechanics
2 BACKGROUND
3 BACKGROUND Correct input data Reliable stability prognoses Correct design of drifts, tunnels, etc. Optimised drilling, blasting and reinforcement Result Minimise risk of failure Decreased costs for rock excavators Minimise environmental disturbances
4 METHODS TO DETERMINE THE ROCK MASS STRENGTH Back analysis of failure Failure criteria Large-scale testing Mathematical modelling Rock mass classification
5 FAILURE CRITERION σ 1s = σ 1 (σ 3, parameter 1, parameter 2,., parameter n) Rock classification system
6 OBJECTIVE Literature review of existing criteria Selection of criteria based on limitations Evaluate selected criteria and parameters in a case study Identify the most applicable criteria and useful parameters
7 SCOPE Continuous Discontinuous Continuous Intact rock Continuous material Closely jointed rock Swedish rock conditions Typical tunnel dimensions Compressive failure (spalling, shearing) Exclude rock burst problems, effect of σ 2, blasting or creeping
8 SELECTION OF CRITERIA Present a result that can be used to estimate the strength Numerical value Used after the first publication Applicable to hard rock masses
9 REVIEW OF SELECTED CRITERIA RMR basic (σ c, RQD, water condition, joint condition, and spacing) Hoek-Brown -, Yudhbir - and Sheorey - RMR 76 Mining Rock Mass Rating (MRMR) Rock Mass Strength (RMS) Q (RQD, joint set number (J n ), joint roughness (J r ), joint alteration (J a ), joint water reduction factor (J w ), and stress reduction factor (SRF)) rock mass quality system (Q) rock mass Number (N) Rock Mass index (RMi) GSI (surface condition and structure of rock) Hoek-Brown GSI
10 IMPORTANT PARAMETERS Intact rock strength Block size Block shape Joint strength Physical scale
11 CASE STUDY 1. "Round Robin Test" for the pillar strength test in the Laisvall mine and a fictitious case in hard rock. 11 participants in the Laisvall case 7 participants in the fictitious case 2. Rock mass strength determination by the author on the large scale strength test of the Stripa core.
12 LAISVALL Full-scale pillar test of 9 pillars (Krauland and Söder,1989) Stresses measured in pillar number 5 and 9
13 LAISVALL LAISVALL The pillar load bearing capacity: 19.8 MPa (Krauland and Söder,1989)
14 LAISVALL Condition class 1 Condition class 3 Height State of stress Width Initial spalling Pillar load bearing capacity Condition class 1 Condition class 3 σ peak σ cm Elastic Elastic Plastic Before failure After failure
15 LAISVALL Examine TAB m m 6.7 m m
16 LAISVALL Estimated average rock mass strength values by 11 participants Hoek-Brown - RMR76 RMS Q Hoek-Brown - GSI RMi N Sheorey - RMR76 Yudhbir - RMR76 MRMR (DRMS) * Determined bearing capacity of pillars (19.8MPa) Rock mass strength (MPa) Determined peak strength of pillar surface (30 MPa)
17 LAISVALL Minimum, average and maximum value when using Q Participant number Determined bearing capacity of pillars (19.8MPa) Determined peak strength of pillar surface (30 MPa) Rock mass strength (MPa)
18 LAISVALL The effect of the parameters in Q on the rock mass strength Parameter Jr Jn RQD Ja Jw SRF Rock mass strength (MPa)
19 FICTITIOUS CASE Estimated average rock mass strength values by 7 participants Hoek-Brown - RMR76 RMS Q Hoek-Brown - GSI RMi* N Sheorey - RMR76 Yudhbir - RMR76 MRMR* Rock mass strength(mpa)
20 STRIPA CASE Uniaxial compressive test Core diameter 1 m and length 2 m σ cm = 7.4 MPa
21 STRIPA CASE Estimated rock mass strength values by the author Hoek-Brown - RMR76 RMS Q Hoek-Brown-GSI RMi N Sheorey - RMR76 Yudhbir - RMR76 MRMR Measured rock strength (7.4 MPa) Rock mass strength [MPa]
22 RESULTS FROM THE CASE STUDY Conformance - criteria and measured strength Criterion N Q (2002) RMi Laisvall case Number of values between [MPa] Stripa case Deviation from 7.4 [MPa] Hoek-Brown -GSI(2002) Yudhbir - RMR Hoek-Brown -RMR Sheorey - RMR MRMR RMS
23 RESULTS FROM THE CASE STUDY Scatter of criteria Laisvall Case Fictitious Case Stripa Case Criterion Scatter [MPa] Criterion Scatter [MPa] Criterion Scatter [MPa] Q (2002) Sheorey - RMR Sheorey - RMR Sheorey - RMR Hoek-Brown -RMR Hoek-Brown -RMR Hoek-Brown -RMR Yudhbir - RMR Hoek-Brown -GSI(2002) 37.5 Yudhbir - RMR RMi 58.0 Yudhbir - RMR RMi 48.0 Hoek-Brown -GSI (2002) 56.0 RMi 8.0 Hoek-Brown -GSI (2002) 47.5 MRMR(DRMS) 46.0 Q-system (2002) 5.5 N 38.0 Q-system (2002) 29.0 MRMR(DRMS) 3.5 MRMR(DRMS) 33.5 N-system 14.0 N-system 3.5 RMS 9.5 RMS 9.5 RMS 2.5
24 RESULTS FROM THE CASE STUDY Scatter of criteria Laisvall Case Fictitious Case Stripa Case Criterion Scatter [MPa] Criterion Scatter [MPa] Criterion Scatter [MPa] Sheorey - RMR Sheorey - RMR Sheorey - RMR Hoek-Brown -RMR Hoek-Brown -RMR Hoek-Brown -RMR Yudhbir - RMR Yudhbir - RMR Hoek-Brown -GSI(2002) 37.5 RMi 48.0 RMi 58.0 Yudhbir - RMR Hoek-Brown -GSI (2002) 47.5 Hoek-Brown -GSI (2002) 56.0 RMi 8.0 Q (2002) 41 MRMR(DRMS) 46.0 Q-system (2002) 5.5 N 38.0 Q-system (2002) 29.0 MRMR(DRMS) 3.5 MRMR(DRMS) 33.5 N-system 14.0 N-system 3.5 RMS 9.5 RMS 9.5 RMS 2.5
25 Parameters RESULTS FROM THE CASE STUDY Criterion Major scatter Laisvall case Minor scatter Major scatter Fictitious case Minor scatter RMR 76 Joint condition and joint spacing RQD Joint condition and joint spacing RQD MRMR Joint condition and joint orientation RQD Joint condition and joint spacing RQD RMS Joint condition and joint spacing RQD Joint condition and joint spacing RQD Q SRF and J a RQD Ja RQD and Jn N Ja RQD Ja RQD and Jn Hoek-Brown - GSI GSI D GSI D RMi ja and Vb jr ja and Vb jr and jl
26 COMMENTS TO THE CASE STUDY Information lost on the way Uncertainty of rock stress measurements No systematic errors in the estimated strength values by the participants
27 CONCLUSIONS Most applicable criteria and useful parameters Criteria N Yudhbir - RMR 76 RMi Q Hoek-Brown - GSI Parameters Size of construction (B) Rock mass quality (A) Block volume (Vb, jl) Joint strength parameters (J r, J a ) Rock properties and surface condition (m, s, GSI)
28 FUTURE RESEARCH Develop a method to estimate the rock mass strength Hard rock mass strength = f (σ 3 ; σ c ; block size and shape; joint strength; physical scale) New case studies where measured rock mass strength can be compared to determined strength from a method.
29 REFERENCE GROUP Erling Nordlund, at Jonny Sjöberg, at Per-Ivar Marklund, at Lars Malmgren and Christina Dahnér-Lindqvist at
30 FINANCIAL SUPPORT Research council of Norrbotten LKAB LTU LKAB foundation
Instructional Objectives. Why use mass classification? What is rock mass classification? 3 Pillars of empirical design and rock mass classification
GE 6477 DISCONTINUOUS ROCK 5. Rock Mass Classification and Empirical Design Dr. Norbert H. Maerz Missouri University of Science and Technology (573) 341-6714 norbert@mst.edu Instructional Objectives 1.
More informationAn introduction to the Rock Mass index (RMi) and its applications
Reference: A. Palmström, www.rockmass.net An introduction to the Rock Mass index (RMi) and its applications by Arild Palmström, Ph.D. 1 Introduction Construction materials commonly used in civil engineering
More informationBehaviour of Blast-Induced Damaged Zone Around Underground Excavations in Hard Rock Mass Problem statement Objectives
Behaviour of Blast-Induced Damaged Zone Around Underground Excavations in Hard Rock Mass Problem statement Blast-induced damaged zone can affect the affect stability and performance of tunnel. But, we
More informationCOMPARING THE RMR, Q, AND RMi CLASSIFICATION SYSTEMS
COMPARING THE RMR, Q, AND RMi CLASSIFICATION SYSTEMS PART 2: CORRELATIONS OF THE THREE SYSTEMS by Arild Palmström, Ph.D. RockMass AS, Oslo, Norway In Part 1, it was shown how the input parameters to the
More informationForensic analysis of a rock burst event at the Kiirunavaara Mine results and implications for the future
Forensic analysis of a rock burst event at the Kiirunavaara Mine results and implications for the future Jonny Sjöberg Christina Dahnér Lars Malmgren Fredrik Perman VATTENFALL POWER CONSULTANT Kiirunavaara
More informationDESCRIPTION OF THE TESTS AND DATA USED IN THE CALIBRATION OF THE RMi
From Palmström A.: RMi a rock mass characterization system for rock engineering purposes. PhD thesis, Oslo University, Norway, 1995, 400 p. APPENDIX 6 DESCRIPTION OF THE TESTS AND DATA USED IN THE CALIBRATION
More informationROCK MASS PROPERTIES FOR TUNNELLING
ROCK MASS PROPERTIES FOR TUNNELLING Robert Bertuzzi 2 nd November 2017 1 Driver Estimating the strength and deformation characteristics of a rock mass for tunnel design is generally based on empiricism
More informationENGINEERING GEOLOGY AND ROCK ENGINEERING
1 ENGINEERING GEOLOGY AND ROCK ENGINEERING HANDBOOK NO. 2 Norwegian Group for Rock Mechanics (NBG) www.bergmekanikk.com Prepared in co-operation with Norwegian Tunnelling Society (NFF) Issued in 2000 SECRETARIAT:
More informationCalculation of periodic roof weighting interval in longwall mining using finite element method
Calculation of periodic roof weighting interval in longwall mining using finite element method Navid Hosseini 1, Kamran Goshtasbi 2, Behdeen Oraee-Mirzamani 3 Abstract The state of periodic loading and
More informationQuantitative Classification of Rock Mass
Quantitative Classification of Rock Mass Description of Joints: Orientation, Persistence, Roughness, Wall Strength, Aperture, Filling, Seepage, Number of sets, Block size, spacing. ISRM commission s i
More informationCollection and use of geological data in rock engineering
Published in ISRM News Journal, 997, pp. - Collection and use of geological data in rock engineering by Arild Palmström "I see almost no research effort being devoted to the generation of the basic input
More informationUnderground Excavation Design Classification
Underground Excavation Design Underground Excavation Design Classification Alfred H. Zettler alfred.zettler@gmx.at Rock Quality Designation Measurement and calculation of RQD Rock Quality Designation index
More informationEstimates of rock mass strength and deformation modulus
Discussion paper # 4 Estimates of rock mass strength and deformation modulus In the preliminary stages of a rock engineering design the need for approximate estimates of rock mass strength and deformation
More informationEmpirical Design in Geotechnical Engineering
EOSC433: Geotechnical Engineering Practice & Design Lecture 5: Empirical Design (Rock Mass Classification & Characterization) 1of 42 Erik Eberhardt UBC Geological Engineering EOSC 433 (2013) Empirical
More informationMEMORANDUM SUBJECT: CERTIFICATE IN ROCK MECHANICS PAPER 1 : THEORY SUBJECT CODE: COMRMC MODERATOR: H YILMAZ EXAMINATION DATE: OCTOBER 2017 TIME:
MEMORANDUM SUBJECT: CERTIFICATE IN ROCK MECHANICS PAPER 1 : THEORY EXAMINER: WM BESTER SUBJECT CODE: COMRMC EXAMINATION DATE: OCTOBER 2017 TIME: MODERATOR: H YILMAZ TOTAL MARKS: [100] PASS MARK: (60%)
More informationOpen Pit Rockslide Runout
EOSC433/536: Geological Engineering Practice I Rock Engineering Lecture 5: Empirical Design & Rock Mass Characterization 1of 46 Erik Eberhardt UBC Geological Engineering EOSC 433 (2017) Open Pit Rockslide
More informationDeformability Modulus of Jointed Rocks, Limitation of Empirical Methods and Introducing a New Analytical Approach
University of Wollongong Research Online Coal Operators' Conference Faculty of Engineering and Information Sciences 2016 Deformability Modulus of Jointed Rocks, Limitation of Empirical Methods and Introducing
More informationSession 3: Geology and Rock Mechanics Fundamentals
Session 3: Geology and Rock Mechanics Fundamentals Geotechnical Engineering Appreciation Course (Jointly organised by IES Academy and GeoSS) Dr Zhou Yingxin, Senior Principal Engineer, DSTA Adjuct Associate
More informationApplication of rock mass classification systems as a tool for rock mass strength determination
Deep Mining 217: Eighth International Conference on Deep and High Stress Mining J Wesseloo (ed.) 217 Australian Centre for Geomechanics, Perth, ISBN 978--992481-6-3 https://papers.acg.uwa.edu.au/p/174_38_moser/
More informationH.Öztürk & E.Ünal Department of Mining Engineering, Middle East Technical University, Ankara, Turkey
17th International Mining Congress and Exhibition of Turkey- IMCET2001, 2001, ISBN 975-395-417-4 Estimation of Lining Thickness Around Circular Shafts H.Öztürk & E.Ünal Department of Mining Engineering,
More informationCorrelation between Rock mass rating, Q-system and Rock mass index based on field data
Correlation between Rock mass rating, Q-system and Rock mass index based on field data Amine SOUFI, Lahcen BAHI, Latifa OUADIF, Jamal Eddine KISSAI Laboratory of Applied Geophysics, Geotechnics, Engineering
More informationWeak Rock - Controlling Ground Deformations
EOSC 547: Tunnelling & Underground Design Topic 7: Ground Characteristic & Support Reaction Curves 1 of 35 Tunnelling Grad Class (2014) Dr. Erik Eberhardt Weak Rock - Controlling Ground Deformations To
More informationEOSC433: Geotechnical Engineering Practice & Design
EOSC433: Geotechnical Engineering Practice & Design Lecture 1: Introduction 1 of 31 Dr. Erik Eberhardt EOSC 433 (Term 2, 2005/06) Overview This course will examine different principles, approaches, and
More informationEstimation of Rock Mass Parameters using Intact Rock Parameters
Estimation of Rock Mass Parameters using Intact Rock Parameters Pawan K.Sah 1, A. Murali Krishna 2 Research Scholar, Civil Engineering, Indian Institute of Technology, Guwahati, Assam, India 1 Assistant
More informationMost Used Rock Mass Classifications for Underground Opening
American J. of Engineering and Applied Sciences 3 (2): 403-411, 2010 ISSN 1941-7020 2010 Science Publications Most Used Rock Mass Classifications for Underground Opening Al-Jbori A ssim and Zhang Yong
More informationTBM "Boreability" in Hard Rock
JMConsulting-Rock Engineering TBM "Boreability" in Hard Rock Javier Macias, PhD Rock Engineering Consultant and Researcher JMConsulting-Rock Engineering AS Anvendt bergmekanikk 10.01.2018, Trondheim Outline
More informationTable of Contents Development of rock engineering 2 When is a rock engineering design acceptable 3 Rock mass classification
Table of Contents 1 Development of rock engineering...1 1.1 Introduction...1 1.2 Rockbursts and elastic theory...4 1.3 Discontinuous rock masses...6 1.4 Engineering rock mechanics...7 1.5 Geological data
More informationIn situ fracturing mechanics stress measurements to improve underground quarry stability analyses
In situ fracturing mechanics stress measurements to improve underground quarry stability analyses Anna M. Ferrero, Maria R. Migliazza, Andrea Segalini University of Parma, Italy Gian P. Giani University
More informationGround Support in Mining and Underground Construction
Ground Support in Mining and Underground Construction Proceedings of the Fifth International Symposium on Ground Support 28-30 September 2004, Perth, Western Australia Edited by Ernesto Villaescusa Yves
More informationForensic analysis of a rock burst event at the Kiirunavaara Mine results and implications for the future
Continuum and Distinct Element Numerical Modeling in Geomechanics 2011 Sainsbury, Hart, Detournay & Nelson (eds.) Paper: 02-05 2011 Itasca International Inc., Minneapolis, ISBN 978-0-9767577-2-6 Forensic
More informationCorrelation of Revised BQ System in China and the International Rock Mass Classification Systems
Journal of Civil Engineering Research 2015, 5(2): 33-38 DOI: 10.5923/j.jce.20150502.03 Correlation of Revised BQ System in China and the Yan Rui-Xin, Shen Yan-Jun * School of Architecture and Civil Engineering,
More informationNumerical analysis of K0 to tunnels in rock masses exhibiting strain-softening behaviour (Case study in Sardasht dam tunnel, NW Iran)
International Research Journal of Applied and Basic Sciences 2013 Available online at www.irjabs.com ISSN 2251-838X / Vol, 4 (6): 1572-1581 Science Explorer Publications Numerical analysis of K0 to tunnels
More informationThe effect of installation angle of rock bolts on the stability of rock slopes
Journal of Novel Applied Sciences Available online at www.jnasci.org 2015 JNAS Journal-2015-4-1/67-71 ISSN 2322-5149 2015 JNAS The effect of installation angle of rock on the stability of rock slopes Mehran
More informationPillar strength estimates for foliated and inclined pillars in schistose material
Pillar strength estimates for foliated and inclined pillars in schistose material L.J. Lorig Itasca Consulting Group, Inc., Minneapolis, MN, USA A. Cabrera Itasca S.A., Santiago, Chile ABSTRACT: Pillar
More informationExcavation method in Goushfill mine
International Journal of Engineering and Technology, 2 (3) (2013) 225-229 Science Publishing Corporation www.sciencepubco.com/index.php/ijet Excavation method in Goushfill mine Masoud Cheraghi Seifabad*,
More informationProbabilistic Stability Analysis of Underground Mine Excavations
DOCTORAL T H E SIS Probabilistic Stability Analysis of Underground Mine Excavations PDF for Resistance PDF for Load µ L µ R Musa Adebayo Idris PROBABILISTIC STABILITY ANALYSIS OF UNDERGROUND MINE EXCAVATIONS
More informationAnalysis of Large-Scale Pit Slope Stability The Aitik Mine Revisited
The Spanish Mining Council is organising the 2018 International Symposium in Slope Stability in Open Pit Mining and Civil Engineering at the XIV International Congress for Energy and Resource Mining in
More informationHuaman A., Cabrera J. and Samaniego A. SRK Consulting (Peru) Introduction ABSTRACT
Managing and validating limited borehole geotechnical information for rock mass characterization purposes experience in Peruvian practice for open pit mine projects Huaman A., Cabrera J. and Samaniego
More informationIntroduction and Background
Introduction and Background Itasca Consulting Group, Inc. (Itasca) has been participating in the geomechanical design of the underground 118-Zone at the Capstone Minto Mine (Minto) in the Yukon, in northwestern
More informationPrediction and follow-up of failure and fallouts in footwall drifts in the Kiirunavaara mine
546 Prediction and follow-up of failure and fallouts in footwall drifts in the Kiirunavaara mine C. Edelbro, J. Sjöberg, L. Malmgren, and C. Dahnér-Lindqvist Abstract: A likely result of changes in rock
More informationA circular tunnel in a Mohr-Coulomb medium with an overlying fault
MAP3D VERIFICATION EXAMPLE 9 A circular tunnel in a Mohr-Coulomb medium with an overlying fault 1 Description This example involves calculating the stresses and displacements on a fault overlying a 5 m
More informationRock parameters for blasting on the highway Split-Dubrovnik
Rock Engineering in Difficult Ground Conditions Soft Rocks and Karst Vrkljan (ed) 2010 Taylor & Francis Group, London, ISBN 978-0-415-80481-3 Rock parameters for blasting on the highway Split-Dubrovnik
More informationThree-Dimensional Failure Criteria Based on the Hoek Brown Criterion
Rock Mech Rock Eng () 45:989 99 DOI.7/s6--77- ISRM SUGGESTED METHOD Three-Dimensional Failure Criteria Based on the Hoek Brown Criterion Stephen Priest Published online: 8 July Ó Springer-Verlag List of
More informationA Strategic Rock Mechanics Study for The Kevitsa Open Pit Mine
A Strategic Rock Mechanics Study for The Kevitsa Open Pit Mine Jonny Sjöberg Jolanta Świtała Rodrigo Ortiz Anton Bergman Pekka Bergström (previously Itasca) CIVIL MANUFACTURING MINING OIL & GAS CIVIL POWER
More informationComparative study of TBM performance prediction models
Comparative study of TBM performance prediction models *Tae Young KO 1), Seung Mo SON 2) and Taek Kon KIM 3) 1), 2, 3) SK Engineering & Construction, Seoul, 04534, Korea * tyko@sk.com ABSTRACT In this
More informationApplication of Core Logging Data to generate a 3D Geotechnical Block Model
Application of Core Logging Data to generate a 3D Geotechnical Block Model Engineering Geology and Innovation: Research Infrastructure - Sustainable Development (I.A.E.G) Eleftheria Vagkli, M.Sc. Senior
More informationGeotechnical project work flow
Wulf Schubert INTRODUCTION The approach to solve an engineering problem is to combine experience with analysis The more complex the conditions are, the more difficult a direct analysis becomes, as appropriate
More informationRelationship between RMR b and GSI based on in situ data
Relationship between RMR b and GSI based on in situ data F. Ceballos Civil Engineer, Técnicas y Proyectos S.A. (TYPSA), Madrid, Spain. C. Olalla, R. Jiménez Professors, Technical University of Madrid,
More informationAnalysis of tunnel considering Modified Mohr-Coulomb criterions
Recent Advances in Rock Engineering (RARE 206) Analysis of tunnel considering Modified Mohr-Coulomb criterions S Rukhaiyar and NK Samadhiya Department of Civil Engineering Indian Institute of Technology
More informationON THE FACE STABILITY OF TUNNELS IN WEAK ROCKS
33 rd 33 Annual rd Annual General General Conference conference of the Canadian of the Canadian Society for Society Civil Engineering for Civil Engineering 33 e Congrès général annuel de la Société canadienne
More informationThis is the published version.
Li, A.J., Khoo, S.Y., Wang, Y. and Lyamin, A.V. 2014, Application of neural network to rock slope stability assessments. In Hicks, Michael A., Brinkgreve, Ronald B.J.. and Rohe, Alexander. (eds), Numerical
More informationGround support modelling involving large ground deformation: Simulation of field observations Part 1
Ground Support 2016 E. Nordlund, T.H. Jones and A. Eitzenberger (eds) Ground support modelling involving large ground deformation: Simulation of field observations Part 1 D.Saiang, Luleå University of
More informationThe effect of dip of joints on the axial force of rock bolts
Journal of Novel Applied Sciences Available online at www.jnasci.org 2015 JNAS Journal-2015-4-4/457-462 ISSN 2322-5149 2015 JNAS The effect of dip of joints on the axial force of rock bolts Farzad bayat
More informationSYLLABUS AND REFERENCES FOR THE STRATA CONTROL CERTIFICATE. METALLIFEROUS MINING OPTION Updated November 1998
CHAMBER OF MINES OF SOUTH AFRICA SYLLABUS AND REFERENCES FOR THE STRATA CONTROL CERTIFICATE METALLIFEROUS MINING OPTION Updated November 1998 1 PART 1 : THEORY 1.1 Basic principles of rock engineering
More informationBest practice rock engineering handbook for other mines
Safety in Mines Research Advisory Committee Final Report Best practice rock engineering handbook for other mines T R Stacey Research Agency : SRK Consulting Project Number : OTH 602 Date : December 2001
More informationEXAMINATION PAPER MEMORANDUM
EXAMINATION PAPER MEMORANDUM SUBJECT: CERTIFICATE IN ROCK MECHANICS PAPER 3.1 : HARD ROCK TABULAR EXAMINER: PJ LE ROUX SUBJECT CODE: COMRMC EXAMINATION DATE: MAY 2015 TIME: MODERATOR: WM BESTER TOTAL MARKS:
More informationROCK MASS CHARACTERISATION IN ENGINEERING PRACTICE
Paul MARINOS NTUA, School of Civil Engineering, 9 Iroon Polytechniou str., Athens, 157 80, Greece, e-mail : marinos@central.ntua.gr ROCK MASS CHARACTERISATION IN ENGINEERING PRACTICE 1. INTRODUCTION The
More informationNNN99. Rock Engineering for the Next Very Large Underground Detector. D. Lee Petersen CNA Consulting Engineers
NNN99 Rock Engineering for the Next Very Large Underground Detector D. Lee Petersen Overview Rock engineering 101 Cavern size & shape Construction methods Feasibility Historical projects Numerical modeling
More informationRock Material. Chapter 3 ROCK MATERIAL HOMOGENEITY AND INHOMOGENEITY CLASSIFICATION OF ROCK MATERIAL
Chapter 3 Rock Material In all things of nature there is something of the marvelous. Aristotle ROCK MATERIAL The term rock material refers to the intact rock within the framework of discontinuities. In
More informationGUIDELINES FOR OPEN PIT SLOPE DESIGN EDITORS: JOHN READ, PETER STACEY # & CSIRO. J x PUBLISHING
GUIDELINES FOR OPEN PIT SLOPE DESIGN EDITORS: JOHN READ, PETER STACEY # & CSIRO J x PUBLISHING S Contents Preface and acknowledgments xiii 1 Fundamentals of slope design 1 Peter Stacey 1.1 Introduction
More informationA new design approach for highway rock slope cuts based on ecological environment protection
A new design approach for highway rock slope cuts based on ecological environment protection T. Lian-jin, Z. Li, W. Yunjie, W. Guang-yuan & Z. Yin-tao College of Architecture and Civil Engineering, Beijing
More informationGeotechnical & Mining Engineering Services
Geotechnical & Mining Engineering Services Southwest Research Institute San Antonio, Texas A s an independent, nonprofit research and development organization, Southwest Research Institute (SwRI ) uses
More informationRMR and SMR as Slope Stability Preliminary Studies of Rajamandala Limestone Mine Area
1th Asian Regional Conference of IAEG () RMR and SMR as Slope Stability Preliminary Studies of Rajamandala Limestone Mine Area Ilham PRASETYA (1), Rizqi NARENDRA (1), Agus WIRAMSYA (), Irvan SOPHIAN (),
More informationNumerical modelling for estimation of first weighting distance in longwall coal mining - A case study
University of Wollongong Research Online Coal Operators' Conference Faculty of Engineering and Information Sciences 2012 Numerical modelling for estimation of first weighting distance in longwall coal
More information7. Foundation and Slope Stability
The Asian Nuclear Safety Network 7. Foundation and Slope Stability (SER 2.5.4 & 2.5.5) Taek-Mo SHIM k147stm@kins.re.kr Korea Institute of Nuclear Safety Structural Systems and Site Evaluation Department
More informationModule 6: Stresses around underground openings. 6.2 STRESSES AROUND UNDERGROUND OPENING contd.
LECTURE 0 6. STRESSES AROUND UNDERGROUND OPENING contd. CASE : When σ x = 0 For σ x = 0, the maximum tangential stress is three times the applied stress and occurs at the boundary on the X-axis that is
More informationUNDERGROUND DESIGN AND DEFORMATION BASED ON SURFACE GEOMETRY DOUGLAS MATTHEW MILNE
UNDERGROUND DESIGN AND DEFORMATION BASED ON SURFACE GEOMETRY By DOUGLAS MATTHEW MILNE B.A.Sc, The University of British Columbia, 1977 M.Sc, The University of London, 1988 DIC, Imperial College, 1988 A
More informationBuilding on Past Experiences Worker Safety
EOSC433: Geotechnical Engineering Practice & Design Lecture 11: Rock Stabilization Principles 1 of 43 Erik Eberhardt UBC Geological Engineering EOSC 433 (2016) Building on Past Experiences Worker Safety
More informationGeotechnical data from optical and acoustic televiewer surveys
Geotechnical data from optical and acoustic televiewer surveys by Farrin De Fredrick MAusIMM, Senior Geotechnical Engineer; Ta Nguyen AIG, Geotechnical Engineer; Clive Seymour MAusIMM, Principal; and Gary
More informationThe effect of discontinuities on stability of rock blocks in tunnel
International Journal of the Physical Sciences Vol. 6(31), pp. 7132-7138, 30 November, 2011 Available online at http://www.academicjournals.org/ijps DOI: 10.5897/IJPS11.777 ISSN 1992-1950 2011 Academic
More informationUse of RMR to Improve Determination of the Bearing Resistance of Rock
Creating Value Delivering Solutions Use of RMR to Improve Determination of the Bearing Resistance of Rock Scott Zang, P.E. Michael Baker Jr., Inc. ASD Design Q v allowable is a presumptive allowable bearing
More informationBLOCK SIZE AND BLOCK SIZE DISTRIBUTION
Paper presented at the Workshop on "Reliablity of classification systems" in connection with the GeoEng000 conference, Melbourne, 8 November 000 BLOCK SIZE AND BLOCK SIZE DISTRIBUTION by Arild Palmström,
More informationRock mass classification systems
Authors: Syed Muntazir Abbas (TU Bergakademie Freiberg, Geotechnical Institute, and National Centre of Excellence in Geology, University of Peshawar) & Prof. Dr. habil. Heinz Konietzky (TU Bergakademie
More informationDetermination of stope geometry in jointed rock mass at Pongkor Underground Gold Mine
Volume 5, Number 2, April 2009, pp.63-68 [TECHNICAL NOTES] Determination of stope geometry in jointed rock mass at Pongkor Underground Gold Mine Budi SULISTIANTO *, M. Safrudin SULAIMAN **, Ridho Kresna
More informationrock mass structure characteristics accurate and precise
Introduction Geotechnical data provides information on rock mass and structure characteristics which will be relied upon for slope and underground design at the Back River deposits. It is important that
More informationFinite difference modelling in underground coal mine roadway
University of Wollongong Research Online Coal Operators' Conference Faculty of Engineering and Information Sciences 2017 Finite difference modelling in underground coal mine roadway Ali Akbar Sahebi University
More informationDECLARATION. ... (Signature of candidate) ...day of... (year)... at...
DECLARATION I declare that this dissertation is my own, unaided work. It is being submitted for the Degree of Master of Science in the University of the Witwatersrand, Johannesburg. It has not been submitted
More informationModule 5: Failure Criteria of Rock and Rock masses. Contents Hydrostatic compression Deviatoric compression
FAILURE CRITERIA OF ROCK AND ROCK MASSES Contents 5.1 Failure in rocks 5.1.1 Hydrostatic compression 5.1.2 Deviatoric compression 5.1.3 Effect of confining pressure 5.2 Failure modes in rocks 5.3 Complete
More informationDesign of Support System and Stability Evaluation for Underground Workings of Gare Palma Coal Mine A Case Study
AMSE JOURNALS-AMSE IIETA publication-2017-series: Modelling C; Vol. 78; N 3; pp 303-315 Submitted Sept. 20, 2017; Revised Jan. 04, 2018; Accepted Jan. 05, 2018 Design of Support System and Stability Evaluation
More informationEstimation of rock cavability in jointed roof in longwall mining
University of Wollongong Research Online Coal Operators' Conference Faculty of Engineering and Information Sciences 2013 Estimation of rock cavability in jointed roof in longwall mining Alireza Jabinpoor
More informationModule 9 : Foundation on rocks
LECTURE 32 9.3 BEARING CAPCITY contd... 9.3.2 Safe bearing pressure There are different methods are available to determine the safe bearing pressure on rocks. However, the applicability of different methods
More informationApplicability of geomechanical classifications for estimation of strength properties in Brazilian rock masses
Anais da Academia Brasileira de Ciências (2017) 89(2): 859-872 (Annals of the Brazilian Academy of Sciences) Printed version ISSN 0001-3765 / Online version ISSN 1678-2690 http://dx.doi.org/10.1590/0001-3765201720160065
More informationA Document on ASSESSMENT OF ENGINEERING PROPERTIES OF ROCK-MASS IN CIVIL ENGINEERING APPLICATIONS. Compiled by Mahendra Singh
A Document on ASSESSMENT OF ENGINEERING PROPERTIES OF ROCK-MASS IN CIVIL ENGINEERING APPLICATIONS Compiled by Mahendra Singh Contributors: T. Ramamurthy Bhawani Singh M.N. Viladkar K. S. Rao T.G. Sitharam
More informationRock Mechanics and Seismology Laboratory
CAEE 211 Geology Laboratory 6 Lab Date: 29 July 2016 Rock Mechanics and Seismology Laboratory Due Date: 5 August 2016 Attendance (based on signing): 30 points Submitting Student Name: Members of laboratory
More informationAppendix 6 Geotechnical report
Page 56 Appendix 6 Geotechnical report 1. Introduction The following provides an initial and preliminary description/assessment of the overall geology, the likely ground conditions and preliminary geotechnical
More informationSeismic analysis of horseshoe tunnels under dynamic loads due to earthquakes
University of Wollongong Research Online Coal Operators' Conference Faculty of Engineering and Information Sciences 2010 Seismic analysis of horseshoe tunnels under dynamic loads due to earthquakes Navid
More informationROCK MASSES ENGINEERING CLASSIFICATION OF ZARANI DAM SITE (SOUTH-EAST OF IRAN)
ROCK MASSS NGINRING CLASSIFICATION OF ZARANI DAM SIT (SOUTH-AST OF IRAN) Mojtaba Ansarifar 1, *Jafar Rahnamarad 1 and Mahtab Aflaki 2 1 Department of Geology, Zahedan Branch, Islamic Azad University, Zahedan,
More informationA PROBABILISTIC APPROACH FOR CHARACTERIZING THE COMPLEX GEOLOGIC ENVIRONMENT FOR DESIGN OF THE NEW METRO DO PORTO
AITES-ITA 2001 World Tunnel Congress PROGRESS IN TUNNELING AFTER 2000 Milano, June 10-13, 2001 Volume III, pp. 463-470 A PROBABILISTIC APPROACH FOR CHARACTERIZING THE COMPLEX GEOLOGIC ENVIRONMENT FOR DESIGN
More informationGeotechnical Models and Data Confidence in Mining Geotechnical Design
Geotechnical Models and Data Confidence in Mining Geotechnical Design Michael Dunn Principal Consultant (Geotechnical Engineering) Overview Geotechnical models Geotechnical model and design Data reliability
More informationSYLLABUS AND REFERENCES FOR THE STRATA CONTROL CERTIFICATE COAL MINING OPTION
CHAMBER OF MINES OS SOUTH AFRICA SYLLABUS AND REFERENCES FOR THE STRATA CONTROL CERTIFICATE COAL MINING OPTION 1. PART 1 : THEORY 1.1 Basic principles of rock engineering 1.1.1 Terms, definitions and basic
More informationRing Blasting Design Modeling and Optimization
Ring Blasting Design Modeling and Optimization María Rocha, Rocha Blast Engineers, Spain & Roberto Laredo, Real Miners Consulting S.L., Spain Benjamín Cebrián, Blast-Consult S.L., Spain Abstract Ring blasting
More information1. Rock Mechanics and mining engineering
1. Rock Mechanics and mining engineering 1.1 General concepts Rock mechanics is the theoretical and applied science of the mechanical behavior of rock and rock masses; it is that branch of mechanics concerned
More informationInfluence of the undercut height on the behaviour of pillars at the extraction level in block and panel caving operations
Caving 2018 Y Potvin and J Jakubec (eds) 2018 Australian Centre for Geomechanics, Perth, ISBN 978-0-9924810-9-4 https://papers.acg.uwa.edu.au/p/1815_24_alvarez/ Influence of the undercut height on the
More informationThe MRMR Rock Mass Rating Classification System in Mining Practice
The MRMR Rock Mass Rating Classification System in Mining Practice J Jakubec 1 and D H Laubscher 2 ABSTRACT The in situ rock mass rating system IRMR - leading to the mining rock mass rating system - MRMR
More informationSTRENGTH AND DEFORMABILITY OF SPECIFIC SEDIMENTARY AND OPHIOLITHIC ROCKS
Δελτίο της Ελληνικής Γεωλογικής Εταιρίας, 2010 Bulletin of the Geological Society of Greece, 2010 Πρακτικά 12ου Διεθνούς Συνεδρίου Proceedings of the 12th International Congress Πάτρα, Μάιος 2010 Patras,
More informationCalibration of a Fragmentation Model for a New Mining Operation
Calibration of a Fragmentation Model for a New Mining Operation María Rocha, Split Engineering Chile & John Kemeny, Split Engineering, University of Arizona & Tom BoBo, Split Engineering & Cristian Rodriguez,
More informationA PARAMETER STUDY OF THE DAMAGED ROCK ZONE AROUND SHALLOW TUNNELS IN BRITTLE ROCK MASS
A PARAMETER STUDY OF THE DAMAGED ROCK ZONE AROUND SHALLOW TUNNELS IN BRITTLE ROCK MASS D. SAIANG 1 and E. NORDLUND 1 1 Division of Rock Mechanics and Rock Engineering, Luleå University of Technology, Sweden.
More informationSTABILITY CHECK AND SUPPORT DESIGNING FOR THE GR-2011 EXPLORATION DRIFT
UNDERGROUND MINING ENGINEERING 19 (2011) 83-91 UDK 62 FACULTY OF MINING AND GEOLOGY, BELGRADE YU ISSN 03542904 Professional paper STABILITY CHECK AND SUPPORT DESIGNING FOR THE GR-2011 EXPLORATION DRIFT
More informationCavity Expansion Methods in Geomechanics
Cavity Expansion Methods in Geomechanics by Hai-Sui Yu School of Civil Engineering, University of Nottingham, U. K. KLUWER ACADEMIC PUBLISHERS DORDRECHT / BOSTON / LONDON TABLE OF CONTENTS Foreword Preface
More informationRock slope failure along non persistent joints insights from fracture mechanics approach
Rock slope failure along non persistent joints insights from fracture mechanics approach Louis N.Y. Wong PhD(MIT), BSc(HKU) Assistant Professor and Assistant Chair (Academic) Nanyang Technological University,
More information