| Abstract: | A recently constructed flume, 95 m long and 2 m wide, permits systematic experimentation with unsteady, nonuniform flows of poorly sorted geological debris. Preliminary experiments with water-saturated mixtures of sand and gravel show that they flow in a manner consistent with Coulomb frictional behavior. The Coulomb flow model of Savage and Hutter (1989, 1991), modified to include quasi-static pore-pressure effects, predicts flow-front velocities and flow depths reasonably well. Moreover, simple scaling analyses show that grain friction, rather than liquid viscosity or grain collisions, probably dominates shear resistance and momentum transport in the experimental flows. The same scaling indicates that grain friction is also important in many natural debris flows. |
| Genre: | Conference Paper |
| ProdID: | 70017979 |
| Citation Author: | Iverson, Richard, M.; LaHusen, Richard, G. |
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| Citation Editor: | Shen Hsieh WenSu S.T.Wen Feng |
| Citation End Page: | 1609 |
| Citation Issue: | pt 2 |
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| Citation Language: | English |
| Citation Larger Work Title: | Proceedings - National Conference on Hydraulic Engineering |
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| Citation Number Of Pages: | 6 |
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| Citation Publisher: | Publ by ASCE |
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| Citation Search Results Text: | Friction in debris flows: inferences from large-scale flume experiments; 1993; Conference Paper; Proceedings - National Conference on Hydraulic Engineering; Iverson, Richard, M.; LaHusen, Richard, G. |
| Citation Start Page: | 1604 |
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| Citation Year: | 1993 |
| Type: | citation/reference |
| Text: | Friction in debris flows: inferences from large-scale flume experiments; 1993; Conference Paper; Proceedings - National Conference on Hydraulic Engineering; Iverson, Richard, M.; LaHusen, Richard, G. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Fri, 1 Jan 1993 00:00 -0600 |
| Publisher: | Publ by ASCE |
