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Showing: 1 to 10 of 2510 matches for "Q system rock classification"  Page   1   2   3   4   5   6   7   8   9  next TITLE Rock Mass Classification is Only Part of the Answer to Assess Raise Boring  SUMMARY ... follows the design of a raise bore using the method described by McCracken and Stacey (1989), the raise bore rock quality classification system, Q R . The ... AUTHOR J Wallis PUBLISHED 2008 TITLE Analysis of Rock Mass Classification Systems for Crown Pillar Design  SUMMARY ... lbree methods of rock mass classification, ie RMR-, Q- and Modified RMR-system in addition to the stability graph method were used to assess crown pillar ... AUTHOR Porter I PUBLISHED 1994 TITLE Application of Rock Mass Characterization to the Stability Assessment and Blast Design in Hard Rock Surface Mining Excavations  SUMMARY ... The Q system of rock mass classification is based on six different parameters which are estimated £ran surface mapping and laboratory investigations (Barton ... AUTHOR Singh, R. N. ; Elmherig, A. M. ; Sunu, M. R. PUBLISHED 1986 TITLE Using Rock Mechanics Classification to Reduce Ground Instability in Amethyst Underground Mining  SUMMARY ... 74 The second procedure used for rock classification is the rock quality index or (Q) system of Barton et al (1974) which uses the following parameters: (i ... AUTHOR Zingano A ; Costa J F PUBLISHED 1997 TITLE An engineering classification for rocks and rock masses  SUMMARY ... Q-system 4 have been developed basically for the ... of tunnels and choice of their support system. ... uniaxial compressive strength of intact rock, joint spacing, ... AUTHOR Ramamurthy, T. PUBLISHED 2003 TITLE Recent Developments in Australian Shaft Excavation Practice ù Raise Bored Shafts in Highly Stressed Rock  SUMMARY ... reduction factor (SRF) in the Q system as the ... stresses and stress failure classification for vertical ... Brittle rock failure criteria The method proposed by ... AUTHOR D Sidea PUBLISHED 2005 TITLE SRC rock mass classification applied to tunnels under high tectonic stress  SUMMARY ... The Q system was occasional applied and only partial results were obtained ... when assessing deformability and supports based on rock mass classification. ... AUTHOR Gonzalez de Vallejo, L. I. PUBLISHED 2003 TITLE 3-D Modeling of rock mass quality  SUMMARY ... The rock mechanical classification using Q-system is made from selected drifts. Major faults (type, dip and dip direction) are recorded. ... AUTHOR Syrjänen, P. ; Lovén. P. PUBLISHED 2003 TITLE Comparison of different systems for rock mass characterisation and lessons from the Äspö Test Case, Sweden  SUMMARY ... major classification system is the Tunnelling Quality Index (Q) based on a large amount of case histories of underground excavation in hard rock (Grimstad & ... AUTHOR Lanaro, F. ; Röshoff, K. ; Jing, L. ; Christiansson, R. PUBLISHED 2003 TITLE Operational Rock Mechanics at the Cannington Exploration Decline  SUMMARY ... The Q factor rock mass classification system (Barton et al, 1974) is used to assess support needs during the preliminary design stage and subsequently as a ... AUTHOR McGuckin P H ; Logan A S PUBLISHED 1995 Showing: 1 to 10 of 2510 matches for "Q system rock classification"  Page   1   2   3   4   5   6   7   8   9  next Search Again