Search Results

Search Results for "barton q"

Search Again

Organization / Society AIME (177) AUSIMM (124) DFI (1) NIOSH (235) RMCMI (3) SAIMM (53) SME (183) TMS (9) USBM (1) All News Jobs Blogs Research

Showing: 1 to 10 of 786 matches for "barton q"  Page   1   2   3   4   5   6   7   8   9  next TITLE Use Of The Mining Rock Mass Rating (MRMR) Classification: Industry Experience  SUMMARY ... Figure 4. Category Parameters Beni aw sk i RMR Barton Q Laubs c he r 90 Laubs c he r 20 00 Intact rock strength UCS x x x x Open ... AUTHOR Jakubec, Jarek ; Esterhuizen, Gabriel S., PH.D. PUBLISHED 2007 TITLE Rock-Masses Characterization for Underground Excavation Purposes  SUMMARY ... (RMR), Barton (Q) and Wickham (RSR) for the ... The Q index of the Barton classification was not obtained from the borings due to the fact the ... PUBLISHED 1987 TITLE Shotcrete Lining Design for Underground Excavations in Rock û The Current State of Practice  SUMMARY ... F IG 1 - Modified Barton Q support chart after Papworth (2002). Round determinate panel (RDP) energy absorption values are based on 40 mm of panel deflection. ... AUTHOR L McQueen ; B Bendtsen PUBLISHED 2008 TITLE Common Infrastructure Project ù Development for the Future of PT Freeport Indonesia  SUMMARY ... J BARBER et al Rock unit RQD (%) UCS (MPa) Density (t/m 3 ) Moh’s scale CHERCHAR Abrasivity Barton Q ... Support type Est Qty (m) Barton Q Shotcrete Bolts ... AUTHOR B Mennie ; R Poedjono ; G Coad PUBLISHED 2005 TITLE Development Strategy of the Trident Underground Gold Mine  SUMMARY ... type and used for the design criteria. Barton Q for the Western Zone and the host gabbro is 31.7 and for the ultramafic is 29.8. ... PUBLISHED 2008 TITLE A Review of Geotechnical Considerations in Narrow Vein Mining in a High Stress Environment  SUMMARY ... The three most commonly used classification methods are: Bieniawski's RMR system, Laubscher and Taylor's MRMR system, and Barton's Q system. ... AUTHOR Dight P M PUBLISHED 1993 TITLE Geometallurgical Modelling û Quo Vadis?  SUMMARY ... and size distribution, • bond work index, • SAG power index, • tonnes per hour throughput, • A*b, • RMR rock mass rating/Barton Q index, • Davis ... AUTHOR W J Shaw PUBLISHED 2009 TITLE Classification Of Rock Masses To Distinguish Self-Supporting Tunnels From Those Requiring Support ? Introduction  SUMMARY ... The higher the quality (Q) and the lower the value of (SPAN/ESR), the more likely .that the given excavation can be left ... (Details are given by Barton et al.'). ... AUTHOR Barton, Nick PUBLISHED 1975 TITLE Ground support strategies to control large deformations in mining excavations - Synopsis  SUMMARY ... In the Q system for example, Barton et al. ... (1992) have complemented some of the field data used in the development of the Q system by Barton et al. ... AUTHOR Potvin, Y. PUBLISHED 2008 TITLE Are Long TBM Tunnels Faster by TBM?  SUMMARY ... ie, drilling, charging, blasting, ventilation delay, mucking, bolting, shotcreting) and advance per round are each strongly linked to the Q-value (Barton et al ... AUTHOR Barton, Nick PUBLISHED 2001 Showing: 1 to 10 of 786 matches for "barton q"  Page   1   2   3   4   5   6   7   8   9  next Search Again