| Abstract: | A graphical method has been developed for determining the coefficient of consolidation from the transient phases of a flow-pump permeability test. The flow pump can be used to infuse fluid into or withdraw fluid from a laboratory sediment specimen at a constant volumetric rate in order to obtain data that can be used to calculate permeability using Darcy‘s law. Representative type-curve solutions to the associated forced-flow and pressure-decay models are derived. These curves provide the basis for graphically evaluating the permeability k, the coefficient of consolidation cv, and the coefficient of volume change mv. The curve-matching technique is easy and rapid. Values of k, cv and mv for a laterally confined kaolinite specimen were determined by this graphical method and appear to be in reasonably good agreement with numerically derived estimates (within 20%). Discrepancies between the two sets of results seem to be largely a function of data quality. |
| Genre: | Article |
| ProdID: | 70015042 |
| Citation Author: | Morin, Roger, H.; Olsen, Harold, W.; Nelson, Karl, R.; Gill, James, D. |
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| Citation End Page: | 307 |
| Citation Issue: | 4 |
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| Citation Language: | English |
| Citation Larger Work Title: | Geotechnical Testing Journal |
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| Citation Number Of Pages: | 6 |
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| Citation Search Results Text: | Graphical method for determining the coefficient of consolidation cv from a flow-pump permeability test; 1989; Article; Journal; Geotechnical Testing Journal; Morin, Roger, H.; Olsen, Harold, W.; Nelson, Karl, R.; Gill, James, D. |
| Citation Start Page: | 302 |
| Citation Volume: | 12 |
| Citation Year: | 1989 |
| Type: | citation/reference |
| Text: | Graphical method for determining the coefficient of consolidation cv from a flow-pump permeability test; 1989; Article; Journal; Geotechnical Testing Journal; Morin, Roger, H.; Olsen, Harold, W.; Nelson, Karl, R.; Gill, James, D. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Sun, 1 Jan 1989 00:00 -0600 |
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