Q-System Presentation - Bushveld Conference - Nov - Geohart ...

More documents

Recommendations

Info

PROBLEM ROCK MASS CLASSIFICATION SYSTEMS 1. Terzhagi’s 2. RQD 3. Rock Structure Rating (RSR) 4. CSIR Geomechanics Classification for jointed rock mass 5. Modifications to RMR for mining 6. Stini & Lauffer Classifications 7. Checklist methodology for hazard identification in tunnels 8. Rockwall Condition Factor (RCF) 9. Rock Tunneling Quality Index, Q
PROBLEM Q - SYSTEM APPLICABILITY TO IMPALA Q = RQD x Ja x Jw Jn Jr SRF • Simplicity as a measure of block size, inter block shear strength, active stress & all critical factors associated with fog’s • Easy to use underground • Simple relationship between support required, - no support required and tunneling Q-index Q which can be easily modified to suit changing geotechnical conditions
Page 1 and 2: Impala Platinum Limited Rock Engine
Page 3 and 4: 1. Introduction 2. Locality Plan 3.
Page 11 and 12: PROBLEM FOG FATALITY ANALYSIS 95% C
Page 13: PROBLEM FOG FATALITY ANALYSIS - BOU
Page 17 and 18: CASE STUDIES Q - INDEX METHODOLOGY
Page 19 and 20: 10 LEVEL CROSSCUT 23 LEVEL CONVEYOR
Page 21 and 22: CASE STUDIES NO. 9-SHAFT9 10 LEVEL
Page 23 and 24: CASE STUDIES NO. 14-SHAFT 23 LEVEL
Page 25 and 26: CASE STUDIES Rock Mass Quality, Q,
Page 27 and 28: CASE STUDIES Bolt Length Design for
Page 29 and 30: FOG Analysis : Conclusions • 95%

Q-System Presentation - Bushveld Conference - Nov - Geohart ...

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?