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Showing: 1 to 10 of 283 matches for "yielding arch"  Page   1   2   3   4   5   6   7   8   9  next TITLE Strata Control Practices In The Upper Silesian Coal Basin  SUMMARY ... The most widely used roadway support in Polish coal mines is the yielding arch steel support mde from U- or V-shaped sections. For ... AUTHOR Hladysz, Zbigniew PUBLISHED 1982 TITLE The Method Of Bullflex® - An Entire New Approach In Making Steel-Rib Supports For Roadways Far More Effective  SUMMARY ... employed in the Ruhr District for some years now for placing be- hicd the back of rigid and yielding arch supports. This means that ... AUTHOR Dürrfeld, Werner A., Dr. -Ing. PUBLISHED 1981 TITLE Examination of Support Methods for Block Caving Slusher Drifts  SUMMARY ... Like a rigid support, the yielding arch will maintain the development openings to a fixed dimension under normal working load; but, in addition, it has the ... AUTHOR Board, Mark PUBLISHED 1982 TITLE Use of the Pressure Arch in Mine Design at White Pine  SUMMARY ... She pillars to yield, provided that the zone of yielding did not exceed some critical width. Wardell3 has described how the pressure arch concept allows high ... AUTHOR Barrientos, Gonzalo ; Parker, Jack PUBLISHED 1975 TITLE Optimum Mine Designs to Minimize Coal Blimps: A Review of Past and Present U.S. Practices  SUMMARY ... destress the coal, yielding arch supports to minimize associated roof fall damage and hydraulic backfill to support the main roof above the gob. ... AUTHOR Iannacchione, Anthony T. ; DeMarco, Matthew J. PUBLISHED 1992 TITLE Stability evaluation for Jinping arch dam by using bifurcation model in 3D FEM analysis  SUMMARY ... Jinping arch dam is presented as an engineering sample on yielding zone development of arch dam structure. Bifurcation criteria of localization failure ... AUTHOR Zhou, W. ; Chen, X. ; Steve, C. ; Yang, R. PUBLISHED 2003 TITLE Prefailure Pillar Yielding  SUMMARY ... loading may be transmitted by parabolic pressure arches (Abel 1988) and also by thick beam or flat arch mechanisms. Three examples of prefailure yielding It is ... AUTHOR Agapito, J. F. T. ; Goodrich, R. R. PUBLISHED 2003 TITLE Pre-Failure Pillar Yielding  SUMMARY ... One of the first documented applications describes the yielding and pressure arch mechanisms based on experiments in the north of England coal mines at depths ... AUTHOR Agapito, J. F. T. ; Goodrich, R. R. PUBLISHED 2001 TITLE Evaluation of Tri-Sets for Roof-Fall Areas  SUMMARY ... Actual . . . . 2-Hinged straight-leg circular steel -set arch Steel -set arch RSJ 5 4 -ix181 Yielding tri -set Not avai 1 able. NAp Not applicable. S 1980. ... AUTHOR Allwes, Richard A. ; Mangelsdorf, C. P. PUBLISHED 1992 TITLE Instrumentation And Monitoring For Pillar Extraction In A Deep, Faulted Uranium Mine  SUMMARY ... Despite these problems, stressmeter data provides valuable information on rigid and yielding pillar behavior and on load transfer and arch development away ... AUTHOR Scotese, Thomas R. PUBLISHED 1984 Showing: 1 to 10 of 283 matches for "yielding arch"  Page   1   2   3   4   5   6   7   8   9  next Search Again