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Showing: 1 to 10 of 3540 matches for "yield pillar design"  Page   1   2   3   4   5   6   7   8   9  next TITLE The Critical Pillar Concept In Yield Pillar-Based Longwall Gate Road Design  SUMMARY ... revealed low stress levels and substantial pillar and panel rib yielding prior to abutment onset, indicating a properly functioning yield pillar design. ... AUTHOR Koehler, J.R. PUBLISHED 1995 TITLE A New Method For Longwall Pillar Design  SUMMARY ... method for yield pillar design? ... to evaluate whether a yield pillar design is kasiblc in their mines and if so, how they shodd design the mine layour ... AUTHOR Tsang, P. PUBLISHED 1993 TITLE Numerical Simulation Of Yield Pillar Behavior With Creep Material Model  SUMMARY ... ground control. The currently practice of yield pillar design is still largely a trial-and-error procedure. Continued efforts are ... AUTHOR Chen, G. PUBLISHED 1999 TITLE FDM Prediction Of A Yield Pillar Performance In Conjunction With A Field Trial  SUMMARY ... a -0.5 0 4 0.0 0.2 0,4 0.6 0.8 1.0 1,2 1.4 0 Iu 3 c The yield pillar design necessitates sensitive analysis of the in- Figure 5. n?+ value for Parkgate rock. ... AUTHOR Yavuz, H. PUBLISHED 2001 TITLE Coal Pillar Strength Based On The Ground Reaction Curve ? A New Approach  SUMMARY ... phases. Whereas, the determination of pillar behavior phase, particularly in yield pillar design is an important aspect. However ... AUTHOR Oraee, Kazem PUBLISHED 2009 TITLE Chain Pillar Design For U. S. Longwall Panels  SUMMARY ... study in the following sections, including the development of pillar design formula, will ... that the- stress distribu- tion and the development of yield zone in ... AUTHOR Hsiung, S. M. PUBLISHED 1984 TITLE Yield Pillar Behavior At Jim Walter No. 7 Mine Stress And Strata Measurements Of Yield And Abutment Pillars  SUMMARY ... Ltd., is presently studying the yield-stable-yield pillar design in use at the Blue Creek No. 7 Mine located in Brookwood, A1 abama. ... AUTHOR Brasfield, J. PUBLISHED 1994 TITLE A Method for Establishing Site Specific Coal Pillar Design Guidelines  SUMMARY ... horizontal extensometers to indicate depth of pillar edge yield and complement ... the primary concern - for example: a) in chain pillar design, tailgate condition ... AUTHOR Mills KW PUBLISHED 1992 TITLE Comparative Case Study Of Yielding And Critical Coal Pillar Designs In Bump-Prone Strata  SUMMARY ... a narrower 12.2-m-wide design more closely approaches proper yield pillar dimensions. ... suggesting a pmperly functioning yield pillar design. INTRODUCTION ... AUTHOR Koehler, J. R. PUBLISHED 1995 TITLE lnterpanel Barriers for Deep Western U.S. Longwall Mining  SUMMARY ... Firstly, there is an inevitable need for departure from the preferred yield pillar design, which undoubtedly entails higher development costs, and secondly ... AUTHOR Gilbride, Leo PUBLISHED 2004 Showing: 1 to 10 of 3540 matches for "yield pillar design"  Page   1   2   3   4   5   6   7   8   9  next Search Again