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Showing: 1 to 10 of 1580 matches for "effect of roof on yield pillar"  Page   1   2   3   4   5   6   7   8   9  next TITLE Numerical Simulation Of Yield Pillar Behavior With Creep Material Model  SUMMARY ... mainly due to the fact that the roof is strong ... Because of the cantilever effect of this rigid beam ... a pivot point, the load on the yield pillar, separated from ... AUTHOR Chen, G. PUBLISHED 1999 TITLE Discussion - Roof-Control Problems And Supports In A Coal Mine  SUMMARY ... The purpose of the yield pillar was to provide vertical relaxation for the roof strata, hence reducing the effect of horizonal stress. ... AUTHOR Khair, A.W. ; Peng, S. S. PUBLISHED 1992 TITLE FDM Prediction Of A Yield Pillar Performance In Conjunction With A Field Trial  SUMMARY ... panel, where the caved zone has negligible effect on the ... The length of the roof bolts was 2.4 m and ... Prior to commencing the yield pillar trial, a set of stress ... AUTHOR Yavuz, H. PUBLISHED 2001 TITLE Effect of the Interchamber Pi Yield on the Surface Strains in the Movement Trough Edges  SUMMARY ... Effect of the Interchamber Pillar Yield on the ... occuning in the immediate roof of beds requires, for operation safety, the reduction of room width ... AUTHOR Nesterov, Mikhail P. PUBLISHED 1997 TITLE Optimizing Pillar Design In A Multi-Seam Environment  SUMMARY ... Roof (8hde) Pillar (Coal) Floor (Sandstone ... of undermining were analyzed to see the effect of ramp ... Chen, G., "Investigation into Yield Pillar Behavior and Deaign ... AUTHOR Kanniganti, R. PUBLISHED 1995 TITLE Significance Analysis On Variables Affecting Performance Of Longwall Chain Pillar  SUMMARY ... 2). The gob effect was considered by using the similar ... immediate roof, and 5 and 6 for the main roof. ... The Mohr-Coulomb yield criterion was · employed in the ... AUTHOR Tsang, P. PUBLISHED 1994 TITLE Applications Of New Technologies To The Technical Design And Monitoring Of Longwall Panels  SUMMARY ... Various combinations of yield and stiff pillars in gateroads have ... Horizontal stress, the effect of topography and variability of the roof, floor, and ... AUTHOR Blair, Brad R. PUBLISHED 1996 TITLE The Critical Pillar Concept In Yield Pillar-Based Longwall Gate Road Design  SUMMARY ... effect on the final disposition of a specific ... the additional confinement provided by strong roof members ... considered a successful yield pillar application in one ... AUTHOR Koehler, J.R. PUBLISHED 1995 TITLE Numerical simulation of yield pillar behavior with creep material model  SUMMARY ... that this is mainly because the roof is strong ... Because of the cantilever effect of this rigid beam ... as apivot point, the load on the yield pillar, separated from ... AUTHOR Chen, G. ; Sun, C. PUBLISHED 2000 TITLE Elasto-Plastic Finite Element Structural Stability Analysis Of Room And Pillar Mine Workings  SUMMARY ... the inevitable effect of interacnon of the kf,pillar and floor on ... yield state, a realistic approach should incorporate the effect of post-yield behaviour in ... AUTHOR Bensehamdi, S. PUBLISHED 1992 Showing: 1 to 10 of 1580 matches for "effect of roof on yield pillar"  Page   1   2   3   4   5   6   7   8   9  next Search Again