NNN99. Rock Engineering for the Next Very Large Underground Detector. D. Lee Petersen CNA Consulting Engineers
|
|
- Flora Patterson
- 5 years ago
- Views:
Transcription
1 NNN99 Rock Engineering for the Next Very Large Underground Detector D. Lee Petersen
2 Overview Rock engineering 101 Cavern size & shape Construction methods Feasibility Historical projects Numerical modeling Empirical design Cost estimate Assumptions Variations Breakdown by parts Challenges
3 Rock Engineering 101 Rock material strong, stiff, brittle Weak rock > Strong concrete Strong in compression, weak in tension Postpeak stength is low unless confined Rock mass behavior controlled by discontinuities Rock mass strength is 1/2 to 1/10 of rock material strength Discontinuities give rock masses scale effects
4 Rock Engineering 101 Massive rock Rock masses with few discontinuities, or Excavation dimension < discontinuity spacing
5 Rock Engineering 101 Jointed or blocky rock Rock masses with moderate number of discontinuities Excavation dimension > discontinuity spacing
6 Rock Engineering 101 Heavily jointed rock Rock masses with a large number of discontinuities Excavation dimension >> discontinuity spacing
7 Rock Engineering 101 Rock stresses in situ Vertical stress weight of overlying rock ~27 Kpa / m 16.5 MPa at 610 m ~1.2 psi / ft 2,400 psi at 2000 ft Horizontal stress controlled by tectonic forces (builds stresses) & creep (relaxes stresses) At depth, σ v σ h unless there are active tectonic forces
8 Rock Engineering 101 What are the implications for large cavern construction? Find a site with good rock Characterizing the rock mass is JOB ONE Avoid tectonic zones & characterize in situ stresses Select size, shape & orientation to minimize zones of compressive failure or tensile stress
9 Cavern size & shape Cylinder Torus Straight SuperK Soudan 2
10 Cavern Size & Shape
11 Torus Options 60m x 60m x 47.7m radius 50m x 50m x 63.7m radius 40m x 40m x 99.5m radius
12 Torus Options
13 Construction methods Drill & blast Small top headings Install rock support Large benches
14 Is a 10 6 m 3 Cavern Feasible? Previous cavern projects Numerical modeling Empirical design methods
15 Is a 10 6 m 3 Cavern Feasible? 1,000,000 Volume (cubic meters) 800, , , ,000 Existing NG Caverns Span (m)
16 Numerical Modeling
17 Rock Strength Mohr-Coulomb strength criterion Strong c = 18e6 MPa φ = 40 deg Intermediate 1 c = 12e6 MPa φ = 35 deg Intermediate 2 c = 6e6 MPa φ = 30 deg Weak c = 3e6 MPa φ = 28 deg
18 Failure Zones, Cylindrical Cavern Strong Intermediate Weak
19 Failure Zones, 60m x 60m Torus Strong Intermediate Weak
20 Failure Zones, 50m x 50m Torus Strong Intermediate Weak
21 Failure Zones, Straight Cavern Strong Intermediate Weak
22 Empirical design methods Appropriate during feasibility assessments Require classification of the rock mass Most commonly used today: Bieniawski RMR rating NGI Q rating NGI Q rating used in the following
23 Rock Quality Assumptions Q=100 One joint set; rough, irregular, undulating joints with tightly healed, hard, non-softening, impermeable filling; dry or minor water inflow; high stress, very tight structure Q=3 Two joint sets plus misc.; smooth to slickensided, undulating joints; slightly altered joint walls, some silty or sandy clay coatings; medium water inflows, single weakness zones Q=0.1 Three joint sets; slickensided, planar joints with softening or clay coatings; large water inflows; single weakness zones
24 Rock Quality Q=100 Q=3 Q=0.1
25 Rock Quality
26 Rock Quality
27 Rock Quality
28 Rock support methods Rockbolts or cable bolts Provides tensile strength & confinement Shotcrete Sprayed on concrete Provides arch action, prevents loosening, seals Concrete lining Used when: Required thickness exceeds practical shotcrete thickness Better finish is needed
29 Rockbolt Length vs Cavern Span 20 Rockbolt Length (m) Cavern Span (m) Empirical Data Cavern Spans
30 Rockbolt Spacing vs Rock Quality 3 Rockbolt Spacing (m) NGI "Q" Rating Empirical Values Examples
31 Shotcrete Thickness vs Rock Quality 400 Shotcrete Thickness (mm) NGI "Q" Rating Empirical Values Examples
32 Cost Estimate Assumptions Undeveloped site Civil construction environment Highway access Massive scale is cost neutral Advantages of scale offset disadvantages Shafts are 600 meters deep Access tunnels are 2,400 meters long Ancillary space: 2.5 % Mobilization, Bond, etc.: 15% Permits, Fees, Engin., Environ.: 20%
33 Cost Estimate Assumptions Access tunnel cost includes portal & limited site work Shaft cost includes shaft collar, equipment, & limited site work Components not included: Linings (floor & walls) Waterproofing Outfitting Experiment equip. Ventilation Water system Estimate is in 1999 U.S. $ No explicit contingency costs! What is the contingency for an unknown site, unknown country, unknown access, no design work, etc.??
34 Cost Summary $450,000,000 $400,000,000 $350,000,000 $300,000,000 Cost (1999 $) $250,000,000 $200,000,000 $150,000,000 $100,000,000 $50,000,000 $0 Cylinder Q=100 Cylinder Q=3 Cylinder Q=0.1 Straight Q=100 Straight Q=3 Straight Q=0.1 Torus Q=100 Torus Q=3 Torus Q=0.1 Cavern Type & Rock Quality Horizontal Access Vertical Access
35 Cost Summary Excavation Haulage Support Access Tunnel Ancillary Space Mobilization, Bond, etc. Permits, Fees, Eng, etc.
36 Cost Conclusions Costs are sensitive to: volume rock quality Costs are insensitive to: Cavern shape Costs are moderately sensitive to: Horizontal vs. vertical access (within ranges considered)
37 Challenges Find the best possible rock in an acceptable region Find a site with feasible horizontal access Explore co-use opportunities Develop layouts amenable to low cost excavation methods Involve geotechnical engineers throughout the process
An 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 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 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 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 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 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 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 informationStructurally controlled instability in tunnels
Structurally controlled instability in tunnels Introduction In tunnels excavated in jointed rock masses at relatively shallow depth, the most common types of failure are those involving wedges falling
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 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 information1 of 46 Erik Eberhardt UBC Geological Engineering ISRM Edition
Rock Engineering Practice & Design Lecture 12: Rock Stabilization Principles 1 of 46 Erik Eberhardt UBC Geological Engineering ISRM Edition Author s Note: The lecture slides provided here are taken from
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 informationDESIGN AND CONSTRUCTION OF LARGE
DESIGN AND CONSTRUCTION OF LARGE TUNNELS IN SOIL AND FAULTED ROCK SENTVID TUNNEL MOTORWAY BYPASS OF LJUBLJANA Josef Daller, ic consulenten, Vienna - Austria International NATM Workshop Singapore 2010 LAYOUT
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 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 informationHaulage Drift Stability Analysis- A Sensitivity Approach
Haulage Drift Stability Analysis- A Sensitivity Approach W. Abdellah University of Assiut, Assiut, Egypt ABSTRACT Haulage drifts are the primary access to the mining blocks of an ore body in a multi-level
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 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 informationUnwedge Geometry and Stability Analysis of Underground Wedges. Sample Problems
Unwedge Geometry and Stability Analysis of Underground Wedges Sample Problems TABLE OF CONTENTS TABLE OF CONTENTS... UNWEDGE SAMPLE PROBLEM #1... Calculate the weight of the maximum wedge formed... UNWEDGE
More informationCase study comparing from Q-system and Terzaghi s Rock Load Classification. *Han Fook Kwang and Cho Man-Sup 1)
Case study comparing from Q-system and Terzaghi s Rock Load Classification *Han Fook Kwang and Cho Man-Sup 1) 1) SK E&C, Singapore ABSTRACT This paper compares Terzaghi s Rock Load Classification System
More informationHANDBOOK. Using the Q-system. Rock mass classification and support design
HANDBOOK Using the Q-system Rock mass classification and support design Oslo, April 2013 For further information on this handbook please contact: NGI Postboks 3930 Ullevål Stadion 0806 OSLO Norway www.ngi.no
More informationInstructional 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 informationMoglicë HPP - Albania. Jorge Terron
Moglicë HPP - Albania Jorge Terron DEVOLL MOGLICË PROJECT Background Location Project Summary Sweco duties Plant overview Geology Cavern complex Layout Site investigations Rock mass characterization Geology
More informationON THE PREDICTION OF EXPERIMENTAL RESULTS FROM TWO PILE TESTS UNDER FORCED VIBRATIONS
Transactions, SMiRT-24 ON THE PREDICTION OF EXPERIMENTAL RESULTS FROM TWO PILE TESTS UNDER FORCED VIBRATIONS 1 Principal Engineer, MTR & Associates, USA INTRODUCTION Mansour Tabatabaie 1 Dynamic response
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 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 informationInfluence of foliation on excavation stability at Rampura Agucha underground mine
Recent Advances in Rock Engineering (RARE 2016) Influence of foliation on excavation stability at Rampura Agucha underground mine P Yadav, A Panda, M Sonam, B Banerjee, S Parihar, and DC Paneri Geotechnical
More informationSimulation of the cutting action of a single PDC cutter using DEM
Petroleum and Mineral Resources 143 Simulation of the cutting action of a single PDC cutter using DEM B. Joodi, M. Sarmadivaleh, V. Rasouli & A. Nabipour Department of Petroleum Engineering, Curtin University,
More informationRock slope rock wedge stability
Engineering manual No. 28 Updated: 02/2018 Rock slope rock wedge stability Program: Rock stability File: Demo_manual_28.gsk The aim of the chapter of this engineering manual is to explain a rock slope
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 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 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 informationSuccessful Construction of a Complex 3D Excavation Using 2D and 3D Modelling
University of Wollongong Research Online Coal Operators' Conference Faculty of Engineering and Information Sciences 2015 Successful Construction of a Complex 3D Excavation Using 2D and 3D Modelling Yvette
More informationFurther Research into Methods of Analysing the October 2000 Stability of Deep Open Pit Mines EXECUTIVE SUMMARY
EXECUTIVE SUMMARY This report presents the results of a program of further research into the use of a combined approach of numerical and centrifuge modeling in assessing the stability of deep open pit
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 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 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 informationHorizontal Stress. US Stress Regimes: In the eastern United States:
Horizontal Stress 1. In the last 30 years, horizontal stress has been recognized as a major component of ground control problems. 2. In general, the horizontal stresses found in coal mines are caused by
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 informationGROUND RESPONSE AND SUPPORT MEASURES FOR PIR PANJAL TUNNEL IN THE HIMALAYAS
Ground IGC 2009, Response Guntur, and INDIA Support Measures for Pir Panjal Tunnel in the Himalayas GROUND RESPONSE AND SUPPORT MEASURES FOR PIR PANJAL TUNNEL IN THE HIMALAYAS K.S. Rao Professor, Department
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 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 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 informationCh 4a Stress, Strain and Shearing
Ch. 4a - Stress, Strain, Shearing Page 1 Ch 4a Stress, Strain and Shearing Reading Assignment Ch. 4a Lecture Notes Sections 4.1-4.3 (Salgado) Other Materials Handout 4 Homework Assignment 3 Problems 4-13,
More informationTHE VOUSSOIR BEAM REACTION CURVE
THE VOUSSOIR BEAM REACTION CURVE Yossef H. Hatzor Ben-Gurion University, Department of Geological and Environmental Sciences Beer-Sheva, Israel, 84105 ABSTRACT: The influence of joint spacing (s) on the
More informationFinal design of Belesar III and Los Peares III Hydropower Projects. (Galicia, Spain).
Final design of Belesar III and Los Peares III Hydropower Projects. (Galicia, Spain). J. Baztán and A. Martín Gas Natural Fenosa Engineering, S.L.U, Madrid, Spain. J. M. Galera and D. Santos Subterra Ingeniería
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 informationPLANES OF WEAKNESS IN ROCKS, ROCK FRCTURES AND FRACTURED ROCK. Contents
PLANES OF WEAKNESS IN ROCKS, ROCK FRCTURES AND FRACTURED ROCK Contents 7.1 Introduction 7.2 Studies On Jointed Rock Mass 7.2.1 Joint Intensity 7.2.2 Orientation Of Joints 7.2.3 Joint Roughness/Joint Strength
More informationACET 406 Mid-Term Exam B
ACET 406 Mid-Term Exam B SUBJECT: ACET 406, INSTRUCTOR: Dr Antonis Michael, DATE: 24/11/09 INSTRUCTIONS You are required to answer all of the following questions within the specified time (90 minutes).you
More informationD : SOLID MECHANICS. Q. 1 Q. 9 carry one mark each. Q.1 Find the force (in kn) in the member BH of the truss shown.
D : SOLID MECHANICS Q. 1 Q. 9 carry one mark each. Q.1 Find the force (in kn) in the member BH of the truss shown. Q.2 Consider the forces of magnitude F acting on the sides of the regular hexagon having
More informationStability analysis of Tabas coal mine roadway using empirical and numerical methods
University of Wollongong Research Online Coal Operators' Conference Faculty of Engineering and Information Sciences 2010 Stability analysis of Tabas coal mine roadway using empirical and numerical methods
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 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 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 informationMeasurement of effective stress shear strength of rock
Measurement of effective stress shear strength of rock R. A. Failmezger, P.E., F. ASCE In-Situ Soil Testing, L.C., Lancaster, Virginia USA D. J. White, Ph. D., P.E. Iowa State University, Ames, Iowa USA
More information25th International Conference on Ground Control in Mining
ANALYTICAL INVESTIGATION OF SHAFT DAMAGES AT WEST ELK MINE Tim Ross, Senior Associate Agapito Associates, Inc. Golden, CO, USA Bo Yu, Senior Engineer Agapito Associates, Inc. Grand Junction, CO, USA Chris
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 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 informationRock-Quality Study at Tunnel Site in the Kameng Hydro-Electric Project, Bichom, Arunachal Pradesh, India
Open access e-journal Earth Science India, eissn: 0974 8350 Vol. 9 (I), January, 2016, pp. 21-28 http://www.earthscienceindia.info/ Rock-Quality Study at Tunnel Site in the Kameng Hydro-Electric Project,
More informationSome issues in modelling of ground support using the three-dimensional distinct element method
Deep Mining 2017: Eighth International Conference on Deep and High Stress Mining J Wesseloo (ed.) 2017 Australian Centre for Geomechanics, Perth, ISBN 978-0-9924810-6-3 https://papers.acg.uwa.edu.au/p/1704_24_bahrani/
More informationCHAPTER FIVE CLASSIFICATION OF SHEAR STRENGTH OF JOINTS IN ROCK
CHAPTER FIVE CLASSIFICATION OF SHEAR STRENGTH OF JOINTS IN ROCK 5.1 Introduction The shear strength of joint surfaces in a rock mass is a difficult parameter to determine. Several researchers, including
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 informationSwelling Pressure Due to volumetric Expansion of a rock mass having swelling minerals when comes in contact with water
Basic Definitions Swelling Pressure Due to volumetric Expansion of a rock mass having swelling minerals when comes in contact with water Primitivestress Stress in the state of equilibrium Induced stress
More informationOpen Access Support Technique of Horse Head in Weakly Cemented Soft Rock
Send Orders for Reprints to reprints@benthamscience.ae 852 The Open Civil Engineering Journal, 2015, 9, 852-856 Open Access Support Technique of Horse Head in Weakly Cemented Soft Rock Li Haixia *, Wang
More informationBorehole Camera And Extensometers To Study Hanging Wall Stability Case Study Using Voussoir beam - Cuiabá Mine
Rock Mechanics for Natural Resources and Infrastructure ISRM Specialized Conference 09-13 September, Goiania, Brazil CBMR/ABMS and ISRM, 2014 Borehole Camera And Extensometers To Study Hanging Wall Stability
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 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 informationJoint Structure and Coal Strength as Controls on Rib Stability
University of Wollongong Research Online Coal Operators' Conference Faculty of Engineering and Information Sciences 2006 Joint Structure and Coal Strength as Controls on Rib Stability Ross W. Seedsman
More informationPressure Vessels Stresses Under Combined Loads Yield Criteria for Ductile Materials and Fracture Criteria for Brittle Materials
Pressure Vessels Stresses Under Combined Loads Yield Criteria for Ductile Materials and Fracture Criteria for Brittle Materials Pressure Vessels: In the previous lectures we have discussed elements subjected
More informationENGINEERING GEOLOGY AND ROCK MECHANICS
ENGINEERING GEOLOGY AND ROCK MECHANICS SKAA 2712 ENGINEERING PROPERTIES OF ROCK MASSES PROF. MADYA DR. EDY TONNIZAM BIN MOHAMAD DEPT. OF GEOTECHNICS AND TRANSPORTATION FACULTY OF CIVIL ENGINEERING UTM
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 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 informationAppraisal of Soil Nailing Design
Indian Geotechnical Journal, 39(1), 2009, 81-95 Appraisal of Soil Nailing Design G. L. Sivakumar Babu * and Vikas Pratap Singh ** Introduction Geotechnical engineers largely prefer soil nailing as an efficient
More informationDefining the role of elastic modelling in underground mine design
Underground Design Methods 2015 Y Potvin (ed.) 2015 Australian Centre for Geomechanics, Perth, ISBN 978-0-9924810-3-2 https://papers.acg.uwa.edu.au/p/1511_03_barsanti/ Defining the role of elastic modelling
More informationJ. Paul Guyer, P.E., R.A.
J. Paul Guyer, P.E., R.A. Paul Guyer is a registered mechanical engineer, civil engineer, fire protection engineer and architect with over 35 years experience in the design of buildings and related infrastructure.
More informationGeotechnical Monitoring for Safe Excavation of Large Rock Cavern: A Case Study
The 31st International Symposium on Automation and Robotics in Construction and Mining (ISARC 2014) Geotechnical Monitoring for Safe Excavation of Large Rock Cavern: A Case Study A.Mandal a, C. Kumar b,
More informationROCK SLOPE STABILITY ANALYSES
Chapter 5 ROCK SLOPE STABILITY ANALYSES 5.1 ROCK MASS CLASSIFICATION In a mountainous region, construction of road corridor requires original and modified slopes to be stable (Sharma et al. 2013). The
More informationCritical Borehole Orientations Rock Mechanics Aspects
Critical Borehole Orientations Rock Mechanics Aspects By R. BRAUN* Abstract This article discusses rock mechanics aspects of the relationship between borehole stability and borehole orientation. Two kinds
More informationFlin Flon Mining Belt
EOSC433: Geotechnical Engineering Practice & Design Lecture 7: Stress Analysis around Underground Openings 1 of 40 Erik Eberhardt UBC Geological Engineering EOSC 433 (2007) Flin Flon Mining Belt Since
More informationENGINEERING GEOLOGY AND ROCK ENGINEERING ASPECTS OF OPERATION AND CLOSURE OF KBS-3
ENGINEERING GEOLOGY AND ROCK ENGINEERING ASPECTS OF OPERATION AND CLOSURE OF KBS-3 DAVID SAIANG Principal Consultant SRK Consulting Sweden NEIL MARSHALL Corporate Consultant SRK Consulting UK 1 of XX SRK
More informationThe University of Melbourne Engineering Mechanics
The University of Melbourne 436-291 Engineering Mechanics Tutorial Four Poisson s Ratio and Axial Loading Part A (Introductory) 1. (Problem 9-22 from Hibbeler - Statics and Mechanics of Materials) A short
More informationExcavation of a cavern for high-pressure storage of natural gas
Tunnelling and Underground Space Technology 21 (2006) 56 67 Tunnelling and Underground Space Technology incorporating Trenchless Technology Research www.elsevier.com/locate/tust Excavation of a cavern
More information2017 Soil Mechanics II and Exercises Final Exam. 2017/7/26 (Wed) 10:00-12:00 Kyotsu 4 Lecture room
2017 Soil Mechanics II and Exercises Final Exam 2017/7/26 (Wed) 10:00-12:00 Kyotsu 4 Lecture room Attention: The exam consists of five questions for which you are provided with five answer sheets. Write
More informationStress arch bunch and its formation mechanism in blocky stratified rock masses
Journal of Rock Mechanics and Geotechnical Engineering. 2012, 4 (1): 19 27 Stress arch bunch and its formation mechanism in blocky stratified rock masses Xin Huang 1, 2 1, 2*, Zixin Zhang 1 State Key Laboratory
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 informationProgress with the excavation and support of the Mingtan power cavern roof
Progress with the excavation and support of the Mingtan power cavern roof D. Moy, Golder Associates, (UK) Ltd. E. Hoek, University of Toronto Originally published as: Moy, D. and Hoek, E. 1989. Progress
More informationProf. B V S Viswanadham, Department of Civil Engineering, IIT Bombay
51 Module 4: Lecture 2 on Stress-strain relationship and Shear strength of soils Contents Stress state, Mohr s circle analysis and Pole, Principal stressspace, Stress pathsin p-q space; Mohr-coulomb failure
More informationImportance of Weathering in Rock Engineering
Importance of Weathering in Rock Engineering Goel, R. K. Chief Scientist, CSIR-Central Institute of Mining and Fuel Research Regional Centre, Roorkee, India Mitra Subhash Irrigation Research Institute
More informationLICENTIATE THESIS. Evaluation of rock mass strength criteria. Catrin Edelbro
LICENTIATE THESIS Evaluation of rock mass strength criteria Catrin Edelbro Department of Civil and Environmental Engineering Division of Rock Mechanics BACKGROUND BACKGROUND Correct input data Reliable
More informationThe Frictional Regime
The Frictional Regime Processes in Structural Geology & Tectonics Ben van der Pluijm WW Norton+Authors, unless noted otherwise 1/25/2016 10:08 AM We Discuss The Frictional Regime Processes of Brittle Deformation
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 informationRock Mechanical Aspects of Roadheader Excavation
Rock Mechanical Aspects of Roadheader Excavation Uwe Restner Sandvik Mining and Construction G.m.b.H., Hard Rock Continuous Mining, Zeltweg, Austria Ralf J. Plinninger Dr. Plinninger Geotechnik, Bernried,
More informationObservational Methods and
Observational Methods and NATM System for Observational approach to tunnel design Eurocode 7 (EC7) includes the following remarks concerning an observational method. Four requirements shall all be made
More informationMechanical Behaviors of Cylindrical Retaining Structures in Ultra-deep Excavation
Mechanical Behaviors of Cylindrical Retaining Structures in Ultra-deep Excavation Pengfei Xu Tongji University August 4, 2015 Outline Introduction Two circular excavations for anchorage foundations 3D
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 informationTHE INFLUENCE OF ROOF BOLTS LOCATION ON ITS INTERACTION WITH THE ROCK MASS.
THE INFLUENCE OF ROOF BOLTS LOCATION ON ITS INTERACTION WITH THE ROCK MASS. M. Cała 1, A. Tajduś 1 ABSTRACT This paper examines the influence of roof bolts location on its interaction with rock mass in
More informationBrittle Deformation. Earth Structure (2 nd Edition), 2004 W.W. Norton & Co, New York Slide show by Ben van der Pluijm
Lecture 6 Brittle Deformation Earth Structure (2 nd Edition), 2004 W.W. Norton & Co, New York Slide show by Ben van der Pluijm WW Norton, unless noted otherwise Brittle deformation EarthStructure (2 nd
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 informationPit Slope Optimization Based on Hydrogeologic Inputs
Pit Slope Optimization Based on Hydrogeologic Inputs G. Evin, F. Henriquez, V. Ugorets SRK Consulting (U.S.), Inc., Lakewood, Colorado, USA ABSTRACT With the variability of commodity prices and the constant
More informationModule 9 : Foundation on rocks. Content
FOUNDATION ON ROCKS Content 9.1 INTRODUCTION 9.2 FOUNDATION TYPES ON ROCKS 9.3 BEARING CAPCITY- SHALLOW FOUNDATION 9.3.1 Ultimate bearing capacity 9.3.2 Safe bearing pressure 9.3.3 Estimation of bearing
More information