Deposition and self-weight consolidation of a shrinking fill
Rapid filling of low-permeability cemented paste backfill into underground stopes results in the generation of significant excess pore pressures that are modified by the volume shrinkage accompanying the process of cement hydration. Gibson produced results of an analysis of the excess pore pressures...
| Main Authors: | , , |
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| Format: | Journal Article |
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ICE PUBLISHING
2016
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| Online Access: | http://hdl.handle.net/20.500.11937/52583 |
| _version_ | 1848758962333155328 |
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| author | Wood, D. Doherty, J. Walske, Megan |
| author_facet | Wood, D. Doherty, J. Walske, Megan |
| author_sort | Wood, D. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Rapid filling of low-permeability cemented paste backfill into underground stopes results in the generation of significant excess pore pressures that are modified by the volume shrinkage accompanying the process of cement hydration. Gibson produced results of an analysis of the excess pore pressures in a simultaneously accreting and consolidating sediment. The dimensionless governing equation lends itself to finite-difference solution: results are presented for a typical rate of volumetric shrinkage and compared with Gibson's original isochrones of excess pore pressure to account for simultaneous conventional consolidation and chemical-induced volume changes in accreting sediment. The effect of time-dependent volume shrinkage can be directly added to Gibson's results for linear problems. The solution technique can be adapted to increase realism by allowing the stiffness of the backfill to increase or permeability to fall as a consequence of the shrinkage. Making a few idealisations, an apparently complex problem can be analysed with rather simple computational resources. Benchmark results can be provided against which more complex methods of analysis (such as finite-element analysis) can be validated. |
| first_indexed | 2025-11-14T09:52:19Z |
| format | Journal Article |
| id | curtin-20.500.11937-52583 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:52:19Z |
| publishDate | 2016 |
| publisher | ICE PUBLISHING |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-525832017-10-13T06:30:51Z Deposition and self-weight consolidation of a shrinking fill Wood, D. Doherty, J. Walske, Megan Rapid filling of low-permeability cemented paste backfill into underground stopes results in the generation of significant excess pore pressures that are modified by the volume shrinkage accompanying the process of cement hydration. Gibson produced results of an analysis of the excess pore pressures in a simultaneously accreting and consolidating sediment. The dimensionless governing equation lends itself to finite-difference solution: results are presented for a typical rate of volumetric shrinkage and compared with Gibson's original isochrones of excess pore pressure to account for simultaneous conventional consolidation and chemical-induced volume changes in accreting sediment. The effect of time-dependent volume shrinkage can be directly added to Gibson's results for linear problems. The solution technique can be adapted to increase realism by allowing the stiffness of the backfill to increase or permeability to fall as a consequence of the shrinkage. Making a few idealisations, an apparently complex problem can be analysed with rather simple computational resources. Benchmark results can be provided against which more complex methods of analysis (such as finite-element analysis) can be validated. 2016 Journal Article http://hdl.handle.net/20.500.11937/52583 10.1680/jgele.15.00142 ICE PUBLISHING restricted |
| spellingShingle | Wood, D. Doherty, J. Walske, Megan Deposition and self-weight consolidation of a shrinking fill |
| title | Deposition and self-weight consolidation of a shrinking fill |
| title_full | Deposition and self-weight consolidation of a shrinking fill |
| title_fullStr | Deposition and self-weight consolidation of a shrinking fill |
| title_full_unstemmed | Deposition and self-weight consolidation of a shrinking fill |
| title_short | Deposition and self-weight consolidation of a shrinking fill |
| title_sort | deposition and self-weight consolidation of a shrinking fill |
| url | http://hdl.handle.net/20.500.11937/52583 |