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Design Optimization In Underground Coal Systems The Roof Truss An Analysis With Applications To Mine Design
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Book Synopsis Design Optimization in Underground Coal Systems: The roof truss : an analysis with applications to mine design by :
Download or read book Design Optimization in Underground Coal Systems: The roof truss : an analysis with applications to mine design written by and published by . This book was released on 1981 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Design Optimization in Underground Coal Systems by :
Download or read book Design Optimization in Underground Coal Systems written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Virginia Polytechnic Institute and State University. Department of Mining and Minerals Engineering Publisher : ISBN 13 : Total Pages :72 pages Book Rating :4.F/5 ( download)
Book Synopsis Design optimization in underground coal systems by : Virginia Polytechnic Institute and State University. Department of Mining and Minerals Engineering
Download or read book Design optimization in underground coal systems written by Virginia Polytechnic Institute and State University. Department of Mining and Minerals Engineering and published by . This book was released on 1976 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Virginia Polytechnic Institute and State University. Department of Mining and Minerals Engineering Publisher : ISBN 13 : Total Pages :72 pages Book Rating :4.3/5 (129 download)
Book Synopsis Design Optimization in Underground Coal Systems by : Virginia Polytechnic Institute and State University. Department of Mining and Minerals Engineering
Download or read book Design Optimization in Underground Coal Systems written by Virginia Polytechnic Institute and State University. Department of Mining and Minerals Engineering and published by . This book was released on 1978 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Design Optimization in Underground Coal Systems: Modified FACESIM and COST-SCHED programs by :
Download or read book Design Optimization in Underground Coal Systems: Modified FACESIM and COST-SCHED programs written by and published by . This book was released on 1981 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1981 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Design Optimization in Underground Coal Systems: A theoretical yield-pillar design technique using the finite-element method of stress analysis by :
Download or read book Design Optimization in Underground Coal Systems: A theoretical yield-pillar design technique using the finite-element method of stress analysis written by and published by . This book was released on 1981 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Design Optimization in Underground Coal Systems by : J. Richard Lucas
Download or read book Design Optimization in Underground Coal Systems written by J. Richard Lucas and published by . This book was released on 1979 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this research effort is to construct a Strata Simulator that will represent the strata behavior over the seam and face area. Included in the simulator will be the effects of the longwall support. The purpose of the simulator is to systematically vary the mining and support parameters, such as rate of mining, support resistances, and profiles to achieve optimum strata control. Simulator input will comprise the physical description of the seam and surrounding strata, the geometry of the proposed layout, and the limits and characteristics of the support. Empirical relationships will be drawn from underground measurements of such data as roof deflection, support loads, and mining rates for each of the mines studies. Such approaches as the finite-element analysis will be used to modify the empirical equations developed to produce generalized relationships for the computer simulator. An alternative to conventional pillar design in room and pillar mining is the yield-pillar concept which makes it possible to raise the extraction ratio in room-and-pillar mines at great depths. At present, field data concerning yield pillars are scarce, and therefore, empirically-based design models cannot be used with confidence. Part of this research effort offers a theoretical method of yield-pillar design based on a non-linear, three-dimensioned, finite-element analysis to determine the stability of mine-panel pillars. A modification of the obliquely-installed roof bolts, the roof-truss, utilizes the concept of post-stressing so that a beneficial support effect is imposed, and it becomes very effective in preventing roof falls which could not be controlled by other means.It has not been used extensively, however, again due to the lack of design criteria and to drilling-equipment difficulties. Widespread use of the roof-truss will require that design criteria be developed.
Book Synopsis ERDA Energy Research Abstracts by : United States. Energy Research and Development Administration
Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration and published by . This book was released on 1976-05 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ERDA Energy Research Abstracts written by and published by . This book was released on 1977 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Design Optimization in Underground Coal Systems by : Christopher Haycocks
Download or read book Design Optimization in Underground Coal Systems written by Christopher Haycocks and published by . This book was released on 1974 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States. Energy Research and Development Administration. Technical Information Center Publisher : ISBN 13 : Total Pages :1680 pages Book Rating :4.3/5 (129 download)
Book Synopsis ERDA Energy Research Abstracts by : United States. Energy Research and Development Administration. Technical Information Center
Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration. Technical Information Center and published by . This book was released on 1977 with total page 1680 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis ERDA Research Abstracts by : United States. Energy Research and Development Administration
Download or read book ERDA Research Abstracts written by United States. Energy Research and Development Administration and published by . This book was released on 1976 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Design Optimization in Underground Coal Systems: Underground longwall ground control simulator by :
Download or read book Design Optimization in Underground Coal Systems: Underground longwall ground control simulator written by and published by . This book was released on 1981 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fossil Energy Update written by and published by . This book was released on 1976 with total page 806 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Design Optimization in Underground Coal Systems by :
Download or read book Design Optimization in Underground Coal Systems written by and published by . This book was released on 1974 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Annual Index by :
Download or read book Government Reports Annual Index written by and published by . This book was released on 1981 with total page 982 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.