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Showing: 1 to 10 of 41 matches for "tailgate convergence longwall"  Page   1   2   3   4   5 TITLE Innovative Concept In Tailgate Entry Support: Elimination Of Crib Blocks Through Utilization Of New High-Capacity Roof Truss Systems  SUMMARY ... face dtstance from the stressmeter (ft) Convergence in tailgate as longwall approaches. 0 6 - -- -- I I -. - - - i 0 5 - C1 rC 2 mC3 *C4 KC5 I ... AUTHOR Stankus, J. C. ; Guo, S. ; McCaffrey, J. J. ; Peng, S.S. PUBLISHED 1997 TITLE Design Of Permanent Block Stopping To Resist Strata Convergence  SUMMARY ... 4 Mine. This mine is experiencing severe floor heave and rib convergence conditions in longwall headgate and tailgate entries. The ... AUTHOR Ray, R. E., Jr. ; Stevenson, J. W. ; Berry, J. A. ; Timko, R. J. PUBLISHED 1986 TITLE Design of Longwall Development Headings  SUMMARY ... Fig. 11 to Fig. 8, 9, and 10. The rate of convergence of the tailgate is 0.05 in. per ft. of face advance near the longwall. This ... AUTHOR Choi, D. S. ; Dahl, H. D. ; von Schonfeldt, H. PUBLISHED 1976 TITLE An overview of longwall ventilation system design  SUMMARY ... agreaterpotential loss of a viable tailgate bleeder connection ... to be abandoneddue to uncontrollable convergence in a ... preplanning stages for the longwall panel. ... AUTHOR Fuller, J. L ; Abdel-Khalek, N. A. PUBLISHED 1991 TITLE Total Yield Pillar Longwall Development-Experimental Results, No. 4 Mine, Brookwood, Alabama  SUMMARY ... This condition was anticipated from previous longwall mining experience with ... mesh was installed in the future tailgate $or Panel B ... Vertical Roadway Convergence ... AUTHOR Gauna, M. ; Martin, E. ; Price, K. R. PUBLISHED 1986 TITLE Analysis Of Support And Strata Reactions In A Bump-Prone Eastern Kentucky Coal Mine  SUMMARY ... were responsible for marked changes in convergence that didnot ... of protiles is typical of longwall gate pillars ... adequate support to shield the tailgate comer of ... AUTHOR Zelanko, J. C. ; Rowell, G. A. ; Barczak, T. M. PUBLISHED 1992 TITLE Rock Mass Response To Mining Longwall Panel 4N, York Canyon Mine  SUMMARY ... response in advance of the longwall face, Fig ... the panel area while the convergence, differential roof ... 115, numbered from headgate to tailgate, were instrumented ... AUTHOR Gentry, Donald W. ; Abel, John F., Jr. PUBLISHED 1979 TITLE Rock Mechanics Studies In A Mechanized Longwall Coal Mine  SUMMARY ... was measured with self-recording convergence meters ... The longwall equipment at the mine consisted of a ... The tailgate entry supports were further reinforced by two ... AUTHOR Lu, Paul H., PH.D. PUBLISHED 1984 TITLE The Application Of Geotechnical Monitoring To Stability Evaluation And Mine Design  SUMMARY ... only after the retreat of the longwall panel ... transfer distances at both the headgate and the tailgate. ... 10 present typical stress and convergence profiles along ... AUTHOR Maleki, H. PUBLISHED 2002 TITLE Rock Mass Response To Mining Longwall Panel 4N, York Canyon Mine  SUMMARY ... The subsidence contours noted to the southwest of the outside tailgate entry are due to a pillar robbing operation that was accompanying the longwall advance. ... AUTHOR Gentry, Donald W. ; Abel, John F., Jr. PUBLISHED 1978 Showing: 1 to 10 of 41 matches for "tailgate convergence longwall"  Page   1   2   3   4   5 Search Again