2 edition of Three-dimensional shield mechanics found in the catalog.
Three-dimensional shield mechanics
Thomas M. Barczak
Published
1987
by U.S. Dept. of the Interior, Bureau of Mines in Pittsburgh, Pa
.
Written in English
Edition Notes
Includes bibliographical references.
| Other titles | Shield mechanics., 3-dimensional shield mechanics. |
| Statement | by Thomas M. Barczak and W. Scott Burton. |
| Series | Report of investigations ;, 9091, Report of investigations (United States. Bureau of Mines) ;, 9091. |
| Contributions | Burton, W. Scott. |
| Classifications | |
|---|---|
| LC Classifications | TN23 .U43 no. 9091, TN288 .U43 no. 9091 |
| The Physical Object | |
| Pagination | 23 p. : |
| Number of Pages | 23 |
| ID Numbers | |
| Open Library | OL2493105M |
| LC Control Number | 87600011 |
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Additional Physical Format: Online version: Barczak, Thomas M. Three-dimensional shield mechanics. Pittsburgh, Pa.: U.S. Dept. of the Interior, Bureau of Mines, THREE-DIMENSIONAL SHIELD MECHANICS By Thomas M. Barczak1 and W. Scott Burton2 ABSTRACT This Bureau of Mines report describes research on developing technol ogy to utilize shields as roof load monitors.
Three-dimensional equa tions of static quilibrium are presented for a generic two-legged long- wall : Thomas M. Barczak, W. Scott. Burton. Three-Dimensional Crack Problems (Mechanics of Fracture) Volume 2 [Sih, George C., Kassir, M.K.] on *FREE* shipping on qualifying offers.
Three-Dimensional Crack Problems (Mechanics of Fracture) Volume 23/5(1). Three- dimensional equations of static equilibrium are presented for a generic two-legged longwall shield. The equations are presented in the most general form, assuming a force and moment vector at each reaction by rigid-body analysis of the shield mechanics.
The resulting system of equations was found to be indeterminate to a very high degree. Three-dimensional shield mechanics / (Pittsburgh, Pa.: U.S. Dept. of the Interior, Bureau of Mines, ), also by W.
Scott Burton (page images at HathiTrust) Barczak, Thomas M.: Two-leg longwall shield mechanics / (Pittsburgh, PA: U.S. Dept. of the Interior, Bureau of Mines, ), also by David E. Schwemmer (page images at HathiTrust).
Shield mechanics and resultant load vector studies. Published Date: Series: Three- dimensional equations of static equilibrium are presented for a generic two-legged longwall shield.
The equations are presented File Type: [PDF - KB]. The geometrical ratio of the shield prototype to physical model isand the height of caving shield (Fig. 2b) is materials used in this study are shown in Fig. coal is simulated by black granite particles, with diameter of 5–10 mm, friction angle of °, and density of kg/m loose immediate roof is simulated by white marble particles with diameter of In this study, the design principles and mechanical performance of such three-dimensional structures were examined at the macroscale and juxtaposed with their microscale counterparts.
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