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Showing: 1 to 10 of 337 matches for "yielding steel arch support"  Page   1   2   3   4   5   6   7   8   9  next TITLE The Design of a Roadway Support System for Dynamic Loads of tremors and Rockbursts  SUMMARY ... New types of yielding steel arch supports have been designed to resist massive static and dynamic loads and a ... The support sections used are 29, 36 and 44 kg/m. ... AUTHOR Maloszewski J ; Kidybinski A ; Sawka B PUBLISHED 1988 TITLE Support selection of mine roadways by means of a computer program  SUMMARY ... The support types considered in this study include rock ... The function of the rigid steel arch is to render the ... The function of the yielding arches is to control ... AUTHOR Ünal, Erdal PUBLISHED 1989 TITLE Development in Steel Roadway Support - A Track Record  SUMMARY ... In contrast to the rigid and jointed arch support, the basic idea of the yielding steel arch support lies in its capability to slide inwards if a high load ... AUTHOR Podjadtke, Rudi PUBLISHED 2008 TITLE Rock Bolting in German Coal Mines - State of the Art and Recent Developments  SUMMARY ... Fig. 7. Typical gate road with yielding steel-arch support, cross-section 20 m 2 • lFrom 15 m 2 (1970) to more than 20 m 2 (1985) ... AUTHOR Hermulheim W PUBLISHED 1986 TITLE The Utilization Of Rockbolting Technology And Monitoring Techniques In The German Coal Fields  SUMMARY ... at the deepest German mine, Ibbenbueren, a system was developed combining roofbolting as primary roof support in arch-shaped entries with yielding steel arches ... AUTHOR Lautsch, Thomas PUBLISHED 2000 TITLE Use Of Steel Sets In Underground Coal  SUMMARY ... 16 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 1. ILLUSTRATIONS Steel arch configurations ... Typical yielding arch shapes ... Typical arch with U-shaped cross section ... AUTHOR Stears, J. H. PUBLISHED 1984 TITLE Stability Behaviour Of Coal Mining Tunnels With Different Supports  SUMMARY ... (3) Shotcrete (rigid element) and TH section steel arch (yielding element) composite support. Curves 1 and 3 are from (12), 2 from (4). ... AUTHOR Wells, B. T. PUBLISHED 1981 TITLE The Method Of Bullflex® - An Entire New Approach In Making Steel-Rib Supports For Roadways Far More Effective  SUMMARY ... underground room by semirigid shell tubing – highly yleldlng steel arches thus ... Yielding-rigid support systems ... 1). no rela- been it was above the arch at such ... AUTHOR Dürrfeld, Werner A., Dr. -Ing. PUBLISHED 1981 TITLE Examination of Support Methods for Block Caving Slusher Drifts  SUMMARY ... The final alternative support method is the yieldable steel arch set. Like a rigid support, the yielding arch will maintain the development openings to a fixed ... AUTHOR Board, Mark PUBLISHED 1982 TITLE Experience at the Radon Uranium Mine  SUMMARY ... of the pressure arch, supporting only the fractured ... The yielding characteristic provided support, where wood failed ... Yielding steel props had been used for some ... AUTHOR Lindstrom, Philip PUBLISHED 1964 Showing: 1 to 10 of 337 matches for "yielding steel arch support"  Page   1   2   3   4   5   6   7   8   9  next Search Again