FIELD TESTING AND INSTRUMENTATION OF ROCK A symposium presented at the Seventy-sixth Annual Meeting AMERICAN SOCIETY FOR TESTING AND MATERIALS Philadelphia, Pa., 24-29 June 1973 ASTM SPECIAL TECHNICAL PUBLICATION 554 G. B. Clark, symposium chairman List price $18.75 04-554000-38,ttT1 AMERICAN SOCIETY FOR TESTING AND MATERIALS 1916 Race Street, Philadelphia, Pa. 19103
(~ BY AMERICAN SOCIETY FOR TESTING AND MATERIALS 1974 Library of Congress Catalog Card Number: 74-76065 NOTE The Society is not responsible, as a body, for the statements and opinions advanced in this publication. Printed in Baltimore, Md. May 1974
Foreword The symposium on Field Testing and Instrumentation of Rock was given at the Seventy-sixth Annual Meeting of the American Society for Testing and Materials held in Philadelphia, Pa,, 24-29 June 1973. Committee D-18 on Soil and Rock for Engineering Purposes sponsored the symposium. G. B. Clark, University of Missouri-Rolla, presided as symposium chairman.
Related ASTM Publications Determination of the In Situ Modulus of Deformation of Rock, STP 477 (1970), $19.25 (04-477000- 38) Sampling of Soil and Rock, STP 483 (1971), $8.00 (04-483000-38) Analytical Methods Developed for Application to Lunar Sample Analysis, STP 539 (1973), $15.00 (04-539000-38)
Contents Introduction 1 A New Technique for Determining the Deformation and Frictional Characteristics of In Situ Rock--H. R. PRATT, A. D. BLACK, W. S. BROWN, AND W. F. BRACE 3 Experimental Procedure 4 Test Programs 13 Test Results 13 Conclusions 17 Interpretation of Plate Loading Test Results--o. J. DODOS 20 Modulus of Deformation 21 Creep Coefficients 22 In Situ Strength Determinations 24 In Situ Stress Determinations 25 Stress Relief and Blast Damage 26 Elastic-Plastic Responses 30 Conclusion 33 Bureau of Reclamation Procedures for Conducting Uniaxial Jacking Tests --D. L. MISTEREK, E. J. SLEBIR, AND,1. S. MONTGOMERY 35 Test Site Selection 36 Preparation of the Test Site 37 Drilling for Instrumentation 37 Logging and Mapping at the Test Site 39 Measurement Locations 40 Instrumentation Installation 40 Equipment Installation 43 Testing 45 Removal of Equipment and Instrumentation 47 Philosophies, Problems, and Solutions 47 Conclusions 50 Reliability of Dilatometer Tests in the Determination of the Modulus of Deformation of a Jointed Rock MaSS--BHAWANI SINGH 52 Computer Simulation of Dilatometer Tests 54 Influence of Joints on the Strain Energy Stored in Rock Masses 57 Evaluation of Assumptions 62 Discussion on Simulated Test Data 63 Conclusions 69 Laboratory Calibration and Field Performance of Inclinometers--D. K. BUTLER 73 Inclinometer Systems 74 Data Interpretation Methods 75 Inclinometer Calibration Device 77 Conclusion 80
Site Engineering Indexing of Rock--R. E. AUFMUTH 81 Index Tests 83 Experimental Work 87 Site Engineering Index 91 Conclusion 98 Overview of the Role of Geologic Investigation and Rock Property Determination in Fragmentation Field Testing--R. C. STECKLEY, E. R. PODNIEKS, P. G. CHAMBERLAIN, AND J. M. PUGLIESE 100 Systematic Approach in Field Testing 101 Regional Test Area Selection 102 Field Site Selection 103 Pre-Test Geologic and Fabric Investigation 104 Pre-Test Rock Property Determinations 105 Fragmentation Tests 108 Post-Test Geologic and Fabric Investigation 109 Post-Test Rock Property Determinations 111 Summary 111 Optimization of the Design and Use of a Triaxial Strain Cell for Stress Determination--w. M. GRAY AND N. A. TOEWS 116 Triaxial Strain Cell 117 Analysis of Variance 120 Optimization of Strain Gage Geometry 122 Discussion 124 Conclusions 129 A Radio Frequency Warning Device for Early Roof Failure Detection-- d. R. MCVEY, T. O. MEYER, AND S. R. LEWIS 135 Unit Operation 136 Transmitter 142 Gage Installation 144 Conclusion 145 Measurement of In Situ Shear Strength Using the Torsional Shear Method --J. B. SELLERS 147 Test Procedure 148 Evaluation of the Results 154 Conclusions 155 A Simple Method for Estimating In Situ Stresses at Great Depths-- 8. C. HAIMSON 156 Hydraulic Fracturing Method 158 Laboratory Investigations 166 Field Tests 174 Conclusions 180