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Rock fabric analysis : a new approach to mine planning.Blair, Paul Martin. January 1969 (has links)
No description available.
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Rock fabric analysis : a new approach to mine planning.Blair, Paul Martin. January 1969 (has links)
No description available.
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Stresses in two-dimensional models of room and piclar mining systems.Lee, Hyun Ha January 1969 (has links)
No description available.
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Numerical modeling of tool-rock interaction in laminated formations /Ouyang, Hsien-Ju. January 1990 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1990. / Vita. Abstract. Includes bibliographical references (leaves 82-84). Also available via the Internet.
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Three dimensional photoelastic study of stress fields around room and pillar mine openingsScott, James J., January 1900 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1962. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 107-108).
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Stresses in two-dimensional models of room and piclar mining systems.Lee, Hyun-Ha January 1969 (has links)
No description available.
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Analysis of the variation of horizontal stresses and strains in bedded deposits in the eastern and midwestern United StatesDolinar, Dennis R. January 1900 (has links)
Thesis (M.S.)--West Virginia University, 2004. / Title from document title page. Document formatted into pages; contains xv, 120 p. : ill. (some col.), maps. Includes abstract. Includes bibliographical references (p. 102-109).
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Pressure changes during formation and trimming of pillars in American Zinc Company's Champion and Thompson-Temperly Mines, south-western Wisconsin mining areaHuebner, David Mason, January 1967 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1967. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
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A study of fractures formed in the rock around an opening made by a reef boring machineAdams, Graham Richard 02 June 2014 (has links)
M.Sc. (Geology) / The purpose of this work was to attempt to understand the behaviour of the ground around a series of holes bored in gold bearing rock by a reef boring machine. Furthermore this ground behaviour is compared with existing theoretical concepts of rock behaviour. The experimental boring site and the sequence of events at that site are described. The state of the rock surrounding the excavations is observed to deteriorate with increase in mining. The fracturing observed is characterised by spalling on the sides of the bored holes. This spalling increases in severity with closeness to the bored out region. Calculations of the stress acting on the sides of the bored holes were made from elastic theory using two techniques. One of these was a quick graphical technique and the other was a more complex analytical one. The analytical technique was used as a check on the results of the graphical technique. Finally the extent of spalling on the sides of the holes is compared with the theoretical stresses. A close correlation is found, and spalling appears to start when the stress level reaches the strength of the rock. As the stress level increases spalling increases in severity until such time as the ground around the bored area is fractured by large through going fractures. At this stage holes bored in this ground no longer spall.
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Determination of mode I (Kic)fracture toughness of the brittle rock types encountered in the South African mining environment.Karparov, K. N. January 1998 (has links)
A Dissertation submitted to the Faculty of Engineering,
University of the Witwatersrand, Johannesburg, in
fulfilment of the requirements
for the Degree of the Master of Science / Drilled specimens from four types of rocks, namely
Quartzite, Norite, Sandstone and Coal encountered in the
South African mining environment were tested to determine
their fracture toughness coefficients, using
International Society for Rock Mechanics (I...)
standards.
The tests were conducted using a MTS servo-controlled
testing machine in displacement control mode. (Abbreviation abstract) / Andrew Chakane 2018
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