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Showing: 1 to 10 of 42 matches for "tailgate convergence"  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 ... Again, a major increase in the tailgate convergence started when the face was 120 ft (36.6 m) inby. ... Convergence in tailgate as longwall approaches. ... 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 The Application Of Geotechnical Monitoring To Stability Evaluation And Mine Design  SUMMARY ... pillar behavior and load transfer distances at both the headgate and the tailgate. Figures 9 and 10 present typical stress and convergence profiles along a ... AUTHOR Maleki, H. PUBLISHED 2002 TITLE Sizing of Chain Pillars Around Longwall Panels  SUMMARY ... so that the coal panels on either side of the tailgate are isolated ... strata movements, stress changes around the shortwall panel, entry convergence, roof sag ... AUTHOR Szwilski, Tony B. PUBLISHED 1983 TITLE Analysis Of Support And Strata Reactions In A Bump-Prone Eastern Kentucky Coal Mine  SUMMARY ... Yield pressure was reached on all monitored shields in both the midface and tailgate locations within a few hours after the event, as roof convergence continued ... AUTHOR Zelanko, J. C. ; Rowell, G. A. ; Barczak, T. M. PUBLISHED 1992 TITLE Three Dimensional Numerical Modelling Of Air Velocities And Dust Control Techniques In A Longwall Face  SUMMARY ... model has been met, it was felt that this level of convergence and accuracy ... path traces of particles introduced into the flow field near the tailgate drum at ... AUTHOR Srinivasa Rao, B. ; Baafi, E. Y. ; Aziz, N. I. ; Singh, R. N. PUBLISHED 1993 TITLE Total Yield Pillar Longwall Development-Experimental Results, No. 4 Mine, Brookwood, Alabama  SUMMARY ... was installed in the future tailgate $or Panel B and is presently controlling the single seam roof and maintaining a travelway. Vertical Roadway Convergence ... AUTHOR Gauna, M. ; Martin, E. ; Price, K. R. PUBLISHED 1986 TITLE Longwall Mining In Illinois  SUMMARY ... face passed. Only in the tailgate did a station show a 10.2-cm (4-inch) convergence at face approach. Measurements of differential ... AUTHOR Conroy, P. J. ; Curth, E. A. PUBLISHED 1981 TITLE An overview of longwall ventilation system design  SUMMARY ... of panels is subjected to agreaterpotential loss of a viable tailgate bleeder connection ... design has had to be abandoneddue to uncontrollable convergence in a ... AUTHOR Fuller, J. L ; Abdel-Khalek, N. A. PUBLISHED 1991 Showing: 1 to 10 of 42 matches for "tailgate convergence"  Page   1   2   3   4   5 Search Again