Drain‐Spacing Calculation Considering Influence of Evaporation
Publication: Journal of Irrigation and Drainage Engineering
Volume 120, Issue 3
Abstract
This paper holds that the widely used equations needs further study relating to its use in calculating drain spacing when field evaporation influence is considered. Research indicates that the coefficient β (i.e., ) for ground‐water evaporation is not always a constant even when the buried depth of ground water remains unchanged at a certain level. Accordingly, drain spacing calculated by this traditional method tends to be overestimated. Largely owing to the continuous development of research on modern soil‐water dynamics, the theoretical analysis and calculation equations of ground‐water evaporation can reflect the basic relationships between ground‐water evaporation, evaporation capacity, and the buried depth of ground water more accurately. This paper introduces new research achievements in this respect and also suggests a new model for the calculation of drain spacing that accounts for evaporation influence.
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Information & Authors
Information
Published In
Journal of Irrigation and Drainage Engineering
Volume 120 • Issue 3 • May 1994
Pages: 563 - 572
Copyright
Copyright © 1994 American Society of Civil Engineers.
History
Received: Dec 16, 1992
Published online: May 1, 1994
Published in print: May 1994
Authors
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