Support of Underground Excavations in Hard Rock





Preface

This volume is the product of four years of research carried out under the direction of Professor Evert Hoek of the Department of Civil Engineering at the University of Toronto, Professor Peter K. Kaiser

of the Geomechanics Research Centre at Laurentian University and Professor William F. Bawden of the Department of Mining Engineer-

ing at Queen's University. Funding was co-ordinated by thc Mining Research Directorate

and was provided by Belmoral Mines Limited, Coniinco Limited, Denison Mines Limited, Falconbridge Limited, Hudson Bay Mining

and Smelting Co. Ltd., hco Limited, Lac Minerals Limited, Min- nova Inc., Noranda Inc., Placer-Dome Inc., Rio Algom Limited and the Teck Corporation.

Funding was also provided by thc University Research Tncentive Fund, administered by the Ministry of Colleges and Universities of Ontario.

The results of this research are summarised in this book. The pro- grams DIPS, UNWEDGE and PHASES, used in this book, were devel-

oped during the project and are available from the Rock Engineering Group of the University of Toronto' .

Many individuals have contributed to the preparation of the book and the associated programs; it would be impossible to name them

all. The advice and encouragement provided by the Technical Ad- visory Committee on the project and by Mr Charles Graham, Man- aging Director of MRD, are warmly acknowledged. The assistance provided by the many engineers and miners at the various field sites,

on which research was carried out, was greatly appreciated. The major contributions made by research engineers and graduate stu- dents who were supported by this project are acknowledged. Special thanks are due to Dr Jean Hutchinson, who assisted with the writing

of this volume and the program manuals, to Dr Jos6 Carvalho, Mr Mark Diederichs, Mr Brent Corkum and Dr Bin Li who were re- sponsible for most of the program development and to Mrs The0 Hoek who compiled the list of references and proof-read the final manuscript.


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