Persistent Link:
http://hdl.handle.net/10150/281472
Title:
Slope stability modelling at the Cyprus Bagdad Mine
Author:
Armstrong, Robert Claude, 1961-
Issue Date:
1991
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
The Bagdad Mine, an open pit mine located in northwestern Arizona, has experienced a slope failure related to a weak weathered tuff bed. The unit has been altered to a clay-like material in areas of the pit. Overburden pressures have caused the tuff to be squeezed out, and blocks of the overlying basalt unit have toppled forward. The failure has been remedied by reducing the pit slope to about 20°, but this solution is not desirable. Modelling of the slope is done using a general purpose finite element method program. The Drucker-Prager theory is used to model the tuff bed, while the other units are treated as being linearly elastic. Material properties for the three rock units are obtained from a variety of sources. Results suggest that loss of shear strength in the tuff, due to blasting-induced liquefaction, may be the cause of slope failure. Suggestions are made for remedial action.
Type:
text; Thesis-Reproduction (electronic)
Keywords:
Geotechnology.; Engineering, Civil.; Engineering, Mining.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Graduate College; Mining and Geological Engineering
Degree Grantor:
University of Arizona
Advisor:
Kemeny, John M.

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_US
dc.titleSlope stability modelling at the Cyprus Bagdad Mineen_US
dc.creatorArmstrong, Robert Claude, 1961-en_US
dc.contributor.authorArmstrong, Robert Claude, 1961-en_US
dc.date.issued1991-
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractThe Bagdad Mine, an open pit mine located in northwestern Arizona, has experienced a slope failure related to a weak weathered tuff bed. The unit has been altered to a clay-like material in areas of the pit. Overburden pressures have caused the tuff to be squeezed out, and blocks of the overlying basalt unit have toppled forward. The failure has been remedied by reducing the pit slope to about 20°, but this solution is not desirable. Modelling of the slope is done using a general purpose finite element method program. The Drucker-Prager theory is used to model the tuff bed, while the other units are treated as being linearly elastic. Material properties for the three rock units are obtained from a variety of sources. Results suggest that loss of shear strength in the tuff, due to blasting-induced liquefaction, may be the cause of slope failure. Suggestions are made for remedial action.en_US
dc.typetexten_US
dc.typeThesis-Reproduction (electronic)en_US
dc.subjectGeotechnology.en_US
dc.subjectEngineering, Civil.en_US
dc.subjectEngineering, Mining.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.disciplineMining and Geological Engineeringen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorKemeny, John M.en_US
dc.identifier.proquest1346434-
dc.identifier.bibrecord.b27227133-
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