Dynamic rock fragmentation: thresholds for long runout rock avalanches
The dynamic fragmentation of rock within rock avalanches is examined using the fragmentation concepts introduced by Grady and co-workers. The analyses use typical material values for weak chalk and limestone in order to determine theoretical strain rate thresholds for dynamic fragmentation and res...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2014-10-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | http://www.gruppofrattura.it/pdf/rivista/numero30/numero_30_art_2.pdf |
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| _version_ | 1846144485024595968 |
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| author | E.T. Bowman |
| author_facet | E.T. Bowman |
| author_sort | E.T. Bowman |
| collection | DOAJ |
| description | The dynamic fragmentation of rock within rock avalanches is examined using the fragmentation
concepts introduced by Grady and co-workers. The analyses use typical material values for weak chalk and
limestone in order to determine theoretical strain rate thresholds for dynamic fragmentation and resulting
fragment sizes. These are found to compare favourably with data obtained from field observations of long
runout rock avalanches and chalk cliff collapses in spite of the simplicity of the approach used. The results
provide insight as to the energy requirements to develop long runout behaviour and hence may help to explain
the observed similarities between large rock avalanches and much smaller scale chalk cliff collapses as seen in
Europe. |
| format | Article |
| id | doaj-art-295bb97a134d4f13a6f414667a29aeb8 |
| institution | Kabale University |
| issn | 1971-8993 1971-8993 |
| language | English |
| publishDate | 2014-10-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-295bb97a134d4f13a6f414667a29aeb82024-12-02T07:12:27ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89931971-89932014-10-0183071310.3221/IGF-ESIS.30.02Dynamic rock fragmentation: thresholds for long runout rock avalanchesE.T. Bowman0University of SheffieldThe dynamic fragmentation of rock within rock avalanches is examined using the fragmentation concepts introduced by Grady and co-workers. The analyses use typical material values for weak chalk and limestone in order to determine theoretical strain rate thresholds for dynamic fragmentation and resulting fragment sizes. These are found to compare favourably with data obtained from field observations of long runout rock avalanches and chalk cliff collapses in spite of the simplicity of the approach used. The results provide insight as to the energy requirements to develop long runout behaviour and hence may help to explain the observed similarities between large rock avalanches and much smaller scale chalk cliff collapses as seen in Europe.http://www.gruppofrattura.it/pdf/rivista/numero30/numero_30_art_2.pdfFlowDynamic fragmentationRock avalancheStrain rate |
| spellingShingle | E.T. Bowman Dynamic rock fragmentation: thresholds for long runout rock avalanches Fracture and Structural Integrity Flow Dynamic fragmentation Rock avalanche Strain rate |
| title | Dynamic rock fragmentation: thresholds for long runout rock avalanches |
| title_full | Dynamic rock fragmentation: thresholds for long runout rock avalanches |
| title_fullStr | Dynamic rock fragmentation: thresholds for long runout rock avalanches |
| title_full_unstemmed | Dynamic rock fragmentation: thresholds for long runout rock avalanches |
| title_short | Dynamic rock fragmentation: thresholds for long runout rock avalanches |
| title_sort | dynamic rock fragmentation thresholds for long runout rock avalanches |
| topic | Flow Dynamic fragmentation Rock avalanche Strain rate |
| url | http://www.gruppofrattura.it/pdf/rivista/numero30/numero_30_art_2.pdf |
| work_keys_str_mv | AT etbowman dynamicrockfragmentationthresholdsforlongrunoutrockavalanches |