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

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1. Introduction 2. Locality Plan 3. Geological Setting 4. Problem 4.1 FOG Analysis 4.2 Rock Mass Classification Systems 4.3 Q-System Q Applicability to Impala 5. Case Studies 5.1 Q-System Q Methodology 5.2 Q-Index Q Analysis for 10 Level Crosscut & 23 Level Conveyor 5.3 Bolt Length Design for permanent mine openings 6. Conclusions
FOG Analysis : Conclusions • 95% of all falls of ground were 0,9m thick or less • nearly all falls of ground were related to discontinuities in the rock mass • large falls of ground are infrequent • conventional support would have been sufficient to prevent falls of ground
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 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: CASE STUDIES Bolt Length Design for

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

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