Rock Support and Reinforcement Practice in Mining.pdf

PROCEEDINGS OF THE INTERNATIONAL SYMPOSIUM ON GROUND SUPPORT KALGOORLIE/WESTERN AUSTRALIA/15-17 MARCH 1999

Rock Support and Reinforcement Practice in Mining Edited by

Ernesto Villaescusa Western Australian School of Mines, Kalgoorlie, Western Australia

Christopher R.Windsor & Alan G.Thompson Rock Technology, Perth, Western Australia

UNIVERS1TATSBIBUOTHLK HANNOVER TECHNISCHE INFORMATIONSBiBLIOTHEK f

A. A. BALKEMA/ROTTERDAM/BROOKFIELD/1999

Rock Support and Reinforcement Practice in Mining, Villaescusa, Windsor & Thompson (eds) © 1999 Balkema, Rotterdam, ISBN 90 5809 045 0

Table of contents

Foreword

IX

Distinguished lectures The evolution of support and reinforcement philosophy and practice for underground mining excavations KT. Brown Support for very weak rock associated with faults and shear zones KHoek 1 Design, analysis, testing and monitoring

3

19

applications

Keynote lecture: Systematic design of reinforcement and support schemes for excavations in jointed rock CR.Windsor

35

Formulating a site specific support system design methodology ADaehnke

59

Corrosivity classification of the underground environment C.Li&K.Lindblad

69

A study of corrosion in underground reinforcement at Mount Isa Mines, Australia J.Robinson & D.B.Tyler

77

An Australian perspective to grouting for cablebolt reinforcement E.Villaescusa

83

The performance of grouted split tube rock bolt systems AG.Thompson & D.J.Finn

91

Performance of the S wellex bolt in hard and soft rocks CLi & U.Hdkansson

103

Reinforcement of underground excavations using the CT Bolt EVillaescusa & J.Wright

109

2 Mesh and membrane support systems Performance assessment of mesh for ground control applications AG.Thompson, CR.Windsor & G.W.Cadby

119

In-situ trials for structural membrane support LWojno & ZJoper

131

In-situ trials and field testing of two polymer restraint membranes D.J.Finn, RTeasdale & C.R.Windsor

139

Laboratory testing of weld mesh for rock support EVillaescusa

155

3 Shotcrete Keynote lecture: International practices and trends in sprayed concrete T.AMelbye

163

An investigation into the behaviour of shotcrete pillars J.Hadjigeorgiou, F.Habiyaremye, J.S.Lessard & P.Andrieux

183

The rationale, design and implementation of steel fibre reinforced wet shotcrete, in highly stressed hard rock tunnels, where rapid development advance is needed, in South Africa A.J.S.Spearing & W.ANaismith

193

The use of shotcrete in Australian underground mining - A contractors perspective M.J. K. Clements

199

The important properties of steel fibre reinforced shotcrete (SFRC) used in mining R.Ratcliffe

209

Shotcrete trials and applications in poor ground conditions at Mount Isa Mines T.Li&B.Cribb

219

The design of shotcrete linings for excavations created by drill and blast methods C. R. Windsor &A.G. Thompson

231

4 Support and reinforcement in metalliferous mines Keynote lecture: The reinforcement process in underground mining E.Villaescusa

245

Integrated ground management - An essential component of our licence to operate AS. Logan

259

Rock bolting practice and the geotechnical management system at Darlot Gold Mine D.Chen & D.Collopy

267

Developments in ground control at Outokumpu's Forrestania Nickel Mines, Western Australia CCarr, P.lMppalainen & M.P.Sandy

277

Choices in ground reinforcement at Mt Charlotte Mine P.AMikula

285

VI

Productivity gains through improved rock reinforcement at McArthur River Mining C.J. Schubert & C. M Stewart

295

Reinforcement design investigations at Big Bell M. P. Sandy & J. R. Player

301

The development of a ground support system at the Pasminco Broken Hill Mine N. SRauert, P.W.Butcher, P.M. Ormsby & K.PTully

317

5 Support in burst-prone ground Retainment support for dynamic events in mines T.R.Stacey & W.D.Ortlepp

329

Observations of the dynamic performance of South African tunnel support systems AT.Haile

335

The use of elongate support in the South African Mining Industry F.J.Glisson, D.H. Kullmann & A EVidal da Silva

343

Assessment of precast cellular lightweight concrete (C.L.C.) support structures P.N. Erasmus & J. Smit

349

Containment support for large static and dynamic deformations in mines W.D.Ortlepp, T.R.Stacey & H.AD.Kirsten

359

6 Safety and training Development and implementation of new ground support standards at Mount Isa Mines Limited Y.Potvin, D.B.Tyler, G.MacSporran, J.Robinson, I.Thin, D.Beck &M.Hudyma

367

Practical considerations in the training of miners on rock bolting J.Hadjigeorgiou, KHammond & F.Lemy

373

Geotechnical mining regulations in Western Australia AM. Lang

377

Elimination of fatalities taskforce - Underground rockfalls project S.M. Harvey

387

Continuous improvement in geotechnical design and practice T.Li

395

1 Strata control in coal mines Keynote lecture: Roof strata reinforcement - Achievements and challenges P.G. Fuller

405

Innovations on stability control of roadways within soft strata in underground coal mines in China CWang

417

VII

Development of roofbolting in Australian coal mining M. Rataj & M. Yearby

425

Author index

437

VIII