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Structural analysis of fractures around underground excavations on a Witwatersrand gold-mine
Dissertation (MSc (Geology))--University of Pretoria, 1969.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2024
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| _version_ | 1867613498988560384 |
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| access_status_str | Open Access |
| author2 | Kersten, Rudiger Welf Olgert |
| author_browse | Kersten, Rudiger Welf Olgert |
| author_facet | Kersten, Rudiger Welf Olgert |
| collection | Thesis |
| dc_rights_str_mv | © 2024 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MSc (Geology))--University of Pretoria, 1969. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/99604 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:37:06.816Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2024 |
| publishDateRange | 2024 |
| publishDateSort | 2024 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/99604 Structural analysis of fractures around underground excavations on a Witwatersrand gold-mine Kersten, Rudiger Welf Olgert Structural analysis Fractures Underground excavations Witwatersrand gold-mine UCTD Dissertation (MSc (Geology))--University of Pretoria, 1969. The interpretation of faults and joints on the bas is of stresses in the earth I s crust has been attempted on many occasions. The main problem encountered in such interpretations has been that the physical conditions, and the stress field, during the period of origin of these faults were imperfectly known. New information has become available with regard to the mechanisms involved in fracture processes, primarily in the development of the modified Griffith criterion of fracture initiation. The validity of this criterion is tested by comparing orientations of fractures as predicted with those measured in a known environment. Fractures in the hanging wall of a s tope were measured on a gold-mine in the Klerksdorp area. Comparison of predicted and measured orientations shows that the limits within which the orientation of fractures must be, can be predicted. However, minor variations within these limits indicate that a more elaborate model than an idealised slit in an elastic medium is necessary. The modified Griffith 1 s criterion of fracture is used to analyse the history of faulting at the Loraine Gold Mine in the Orange Free State. The studies show that it is possible to place certain limiting conditions on the physical properties of the material, and the stress fields existing at the time of origin of the fault systems. Geology MSc (Geology) 2024-11-27T09:16:26Z 2024-11-27T09:16:26Z 22/02/10 1969 Dissertation http://hdl.handle.net/2263/99604 en © 2024 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | Structural analysis Fractures Underground excavations Witwatersrand gold-mine UCTD Structural analysis of fractures around underground excavations on a Witwatersrand gold-mine |
| title | Structural analysis of fractures around underground excavations on a Witwatersrand gold-mine |
| title_full | Structural analysis of fractures around underground excavations on a Witwatersrand gold-mine |
| title_fullStr | Structural analysis of fractures around underground excavations on a Witwatersrand gold-mine |
| title_full_unstemmed | Structural analysis of fractures around underground excavations on a Witwatersrand gold-mine |
| title_short | Structural analysis of fractures around underground excavations on a Witwatersrand gold-mine |
| title_sort | structural analysis of fractures around underground excavations on a witwatersrand gold mine |
| topic | Structural analysis Fractures Underground excavations Witwatersrand gold-mine UCTD |
| url | http://hdl.handle.net/2263/99604 |