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Showing: 1 to 10 of 3940 matches for "yield pillars"  Page   1   2   3   4   5   6   7   8   9  next TITLE Effect of the Interchamber Pi Yield on the Surface Strains in the Movement Trough Edges  SUMMARY ... 1 - r) = 5 mm/month, yield pillars has shown: 2 - fi = 20-60 mm/month; 3 - r) = 150-300 mm/month. Page 3. 16th CONFERENCE ON GROUND CONTROL IN MINING - Pime, t ... AUTHOR Nesterov, Mikhail P. PUBLISHED 1997 TITLE Numerical Simulation Of Yield Pillar Behavior With Creep Material Model  SUMMARY ... In this study, numerical simulations of yield pillars employing the finite element method with time-dependent Drucker-Prager material model are conducted. ... AUTHOR Chen, G. PUBLISHED 1999 TITLE Cable Bolting - Potential Applications For Variable Strata Conditions  SUMMARY ... a) Longwall pull -out areas, b) Roadway junctions, particularly those involving yield pillars. ... The yield pillars are used with great success at No. 5 Mine. ... AUTHOR Allen, David PUBLISHED 1994 TITLE Development of Timedependent Surface Subsidence Over the Total Extractions Areas of the Potash Beds Stoped with Interchamber Yield Pillars  SUMMARY ... of a method for predicting surface subsidence at any time after its initiation when mining a single potash seam with yield pillars without backfilling the moms ... AUTHOR Nesterov, M. P. PUBLISHED 1998 TITLE Ground Control and the Inundation of the Retsof Mine  SUMMARY ... This study concluded that the 2 Yard South panel collapse occurred due to the use of yield pillars in an area where solid rock cover was insufficiently thick ... AUTHOR Scovazzo, Vincent A. PUBLISHED 1997 TITLE Design Of Yield Pillars In The Southern Coal Field Of New South Wales  SUMMARY ... yield-pillars at West Cliff Colliery was conducted at panel 315, which was specially developd for that porpose and war away from M previouslly mined out amas. ... AUTHOR Chaturvedula, V. K. PUBLISHED 1992 TITLE Yield Pillar Behavior At Jim Walter No. 7 Mine Stress And Strata Measurements Of Yield And Abutment Pillars  SUMMARY ... pillar sizes at each mine. Stable pi1 la r sizes have ranged from 30-90 m widths since yield pillars were first introduced at JWR. ... AUTHOR Brasfield, J. PUBLISHED 1994 TITLE How to Cope with Cutter Roof Problem  SUMMARY ... and associated equations (5). When roof and floor were strong in comparison to the coal seam, the width of the yield zone, for total yield pillars, was found ... PUBLISHED 1992 TITLE Coal Pillar Strength Based On The Ground Reaction Curve ? A New Approach  SUMMARY ... coal pillar dimensions, and also determines the elastic and plastic behavior limit, which is important especially for the logical design of yield pillars. ... AUTHOR Oraee, Kazem PUBLISHED 2009 TITLE Long-Term Stability for Two-Seam Mining at OCI's Big Island Mine  SUMMARY ... Two-seam mining has not been accomplished yet using continuous miners and yield pillars. This paper presents an evaluation of long ... AUTHOR Agapito, J. F. T. PUBLISHED 1999 Showing: 1 to 10 of 3940 matches for "yield pillars"  Page   1   2   3   4   5   6   7   8   9  next Search Again