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Direct measurement of pore fluid suction in gold mine tailings
Dissertation (M Eng (Geotechnical Engineering))--University of Pretoria, 2006.
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University of Pretoria
2013
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| _version_ | 1867613571996712960 |
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| access_status_str | Open Access |
| author2 | Rust, Eben |
| author_browse | Rust, Eben |
| author_facet | Rust, Eben |
| collection | Thesis |
| dc_rights_str_mv | © 2002, 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 (M Eng (Geotechnical Engineering))--University of Pretoria, 2006. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/28076 |
| institution | University of Pretoria (South Africa) |
| last_indexed | 2026-06-10T12:38:16.420Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2013 |
| publishDateRange | 2013 |
| publishDateSort | 2013 |
| 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:2263/28076 Direct measurement of pore fluid suction in gold mine tailings Rust, Eben upetd@up.ac.za Van Heerden, Jacobus Hendrik Francois Gold mines and mining Earth dams Pore water Particle size determination Tailings dams UCTD Dissertation (M Eng (Geotechnical Engineering))--University of Pretoria, 2006. A vast amount and variety of mine tailings are produced around the world each day. In the gold¬mining industry in South Africa the residue of crushed are is disposed of in large tailings or hydraulic fill dams. The outer walls of these dams are built up of layers of material, each of which is allowed to dry before the next layer is placed. In order to study the stability of these walls, the appropriate engineering properties of the tailings must be ascertained. Due to the construction technique used in tailings dam construction, the outer walls are in an unsaturated state, which also means that suctions are generated within the tailings. Various techniques exist to measure suction, most of which are indirect methods. The recent development of the mid-¬plane suction probe at the University of Pretoria created the opportunity of measuring suctions directly on desiccating samples of gold mine tailings. A test method has been developed from which soil mechanics parameters can be derived from suction measurements. The experimental programme consisted of a series of these newly developed tests on fine and coarse samples of gold mine tailings, as well as on different particle size ranges. The experimental results were used in the development of a new method of predicting the air-entry value, with only the grading of the tailings known. A new method of predicting the soil-water characteristic curve up to the air-entry value was also proposed. The results of the research showed that the tailings remain saturated up to the air-entry value. The clay, fine silt and medium silt sized tailings was found to be the controlling particle size ranges in the development of suctions. The vast amount of parameters and information gained through the use of the proposed test method clearly indicates its effectiveness in studying the performance and characteristics of a material drying from saturation. The results also indicated the effectiveness of the mid-plane suction probe for the direct measurement of suction. Civil Engineering unrestricted 2013-09-07T12:49:49Z 2005-09-23 2013-09-07T12:49:49Z 2003-09-01 2006-09-23 2005-09-21 Dissertation Van Heerden, JHF 2002, Direct measurement of pore fluid suction in gold mine tailings, MEng dissertation, University of Pretoria, Pretoria, viewed yymmdd < http://hdl.handle.net/2263/28076 > H690/ag http://hdl.handle.net/2263/28076 http://upetd.up.ac.za/thesis/available/etd-09212005-135324/ © 2002, 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 | Gold mines and mining Earth dams Pore water Particle size determination Tailings dams UCTD Direct measurement of pore fluid suction in gold mine tailings |
| title | Direct measurement of pore fluid suction in gold mine tailings |
| title_full | Direct measurement of pore fluid suction in gold mine tailings |
| title_fullStr | Direct measurement of pore fluid suction in gold mine tailings |
| title_full_unstemmed | Direct measurement of pore fluid suction in gold mine tailings |
| title_short | Direct measurement of pore fluid suction in gold mine tailings |
| title_sort | direct measurement of pore fluid suction in gold mine tailings |
| topic | Gold mines and mining Earth dams Pore water Particle size determination Tailings dams UCTD |
| url | http://hdl.handle.net/2263/28076 http://upetd.up.ac.za/thesis/available/etd-09212005-135324/ |