Regression models for hydraulic conductivity and field test of the borehole permeameter
Journal Article
·
· Water Resour. Res.; (United States)
The saturated hydraulic conductivity K/sub s/ of sediments in the vadose zone is an important parameter in predicting the seepage rates of water and contaminants. The borehole permeameter is an in situ technique to test a relatively large sample size at any depth. Solutions are presented which account for the effects of unsaturated flow. These solutions are derived from a regression analysis of results of numerical simulations in which unsaturated hydraulic conductivity is represented by one or two parameters. The results of a borehole permeameter test in a uniform sand are compared with field ponding tests and air entry permeameter tests. The regression-based solutions for the borehole permeameter which account for capillarity provide very good agreement with other permeameter results. Depending upon the approach used to solve the borehole problem K/sub s/ values determined by methods which neglected and included capillary effects varied by a factor of only about two for the soil test.
- Research Organization:
- New Mexico Institute for Mining and Technology, Socorro
- OSTI ID:
- 5438903
- Journal Information:
- Water Resour. Res.; (United States), Journal Name: Water Resour. Res.; (United States) Vol. 23:12; ISSN WRERA
- Country of Publication:
- United States
- Language:
- English
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