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

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CASE STUDIES Q – INDEX ANALYSIS : • No. 9-Shaft 9 ~ 10 Level Crosscut • No. 14-Shaft ~ 23 Level Conveyor Decline 89 Tunneling Quality Index Measurements : • 77 Along 10 Level Crosscut • 12 Along 23 Level Conveyor representing 890m of tunnel
10 LEVEL CROSSCUT 23 LEVEL CONVEYOR CASE STUDIES CASE STUDIES Distribution of Q-Index Q Values Exceptionally poor Extrem ely Poor Very Poor Poor Fair G ood Very G ood Extrem ely G ood 40 30 20 10 0 Q - VALUE CATEGORIES QUANTITY
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 and 14: PROBLEM FOG FATALITY ANALYSIS - BOU
Page 15 and 16: PROBLEM Q - SYSTEM APPLICABILITY TO
Page 17: CASE STUDIES Q - INDEX METHODOLOGY
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 ...

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