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Showing: 1 to 10 of 102 matches for "a modified hoek brown criterion"  Page   1   2   3   4   5   6   7   8   9  next TITLE A Comparison Between Hoek û Brown and Bieniawski Criteria for Coal and Rocks  SUMMARY ... excellent accuracy. The modified Hoek-Brown criterion gives a good result for rocks but does not fit coal data quite well. In other ... PUBLISHED 1998 TITLE Modification of Some Failure Criteria for Rock and Coal  SUMMARY ... 0.99 T ABLE 5 The constant m in the modified Hoek-Brown criterion for coal containing weakness planes at various inclinations. σ ... AUTHOR K Shariar ; V S Vutukuri PUBLISHED 1999 TITLE Strength and mechanics of fractured rocks under triaxial loadings  SUMMARY ... Nonetheless, neither one of the parameters are incorporated into Equation [6], which depicted the modified Hoek-Brown criterion. ... AUTHOR Ranjith, P. G. ; Siew, F. P. ; Hefny, A. M. ; Zhao, J. PUBLISHED 2003 TITLE Stability Of Open Stopes Intercepted By Graphitic Shears At Ashanti Gold Fields Company Ltd., Obuasi Operations In Ghana  SUMMARY ... According to Hoek et al. (1995), the Hoek- Brown modified criterion is more appropriate for such poor quality rock types at Ashanti Mine and justifies setting ... AUTHOR Adu-Acheampong, A. PUBLISHED 2003 TITLE Assessment of Appicability of Strength Criteria for Rock and Rock Mass to Coal Pillars  SUMMARY ... Figure 1. Relationship between m and uniaxial compres- sive strength in MPa in the modified Hoek and Brown criterion. (9) (7) (8) ..ID... -ID... ... AUTHOR Hossaini SMF PUBLISHED 1992 TITLE Some Aspects of Rock Mechanics Applicable to Underground Coal Mining  SUMMARY ... aem ae 0.6 0.8 1 Fig. 5 - ercm/erc versus mm/m for the undistributed rock mass for the modified Hoek and brown criterion (after Vutukuri and Hossaini, 1995) ... AUTHOR Katsuyama K ; Nag DK PUBLISHED 1998 TITLE Predicting Slope Stability in Open Pit Gold and Coal Mines  SUMMARY ... o Figure 1. Plot of the Modified Hoek-Brown Criterion rock mass strength against the SSPC rock mass strength values for Rotowaro opencast coal and GRD Macraes ... AUTHOR J Anderson ; F Bourke ; R N Campbell ; L Clarke PUBLISHED 2000 TITLE Time Dependent Strength Of Coal Strata For Long-Term Pillar Stability  SUMMARY ... ata: original HA-Brown criterion, modified Hoek-Brown criterion, and Generalized criterion, and (3) long-term strength estimation ... AUTHOR Bieniawski, Z. T. PUBLISHED 1994 TITLE Application of modified Hoek-Brown transition relationships for assessing strength and post yield behaviour at both ends of the rock competence scale - Synopsis  SUMMARY ... classifying such rock masses, but also in application of the Hoek-Brown criterion for determining rock mass strength. Application of modified Hoek-Brown ... AUTHOR Carter, T. G. PUBLISHED 2008 TITLE The influence of rock mass defects on pit slope design at the Ok Tedi mine, Papua New Guinea  SUMMARY ... 63 drill- holes were examined, 25 in Ieru Formation siltstone, 16 in the orebody intrusives, 9 in Darai Limestone, and 13 in the skarn rocks; 3. Hoek shear box ... PUBLISHED 1994 Showing: 1 to 10 of 102 matches for "a modified hoek brown criterion"  Page   1   2   3   4   5   6   7   8   9  next Search Again