Flow Behavior of Kinked Strip Drains

by Christopher A. Lawrence, Drexel Univ, Philadelphia, PA, USA,
Robert M. Koerner, Drexel Univ, Philadelphia, PA, USA,



Document Type: Proceeding Paper

Part of: Geosynthetics for Soil Improvement

Abstract: Due to the often expressed concern over the axial deformation of strip drains and the resulting impact on flow rate, this study has been undertaken. A laboratory experiment has been constructed, evaluated, and standardized so that strip drain flow rates can be measured in a kinked, or crimped, condition and compared to flow rates in the as received condition. This device has been evaluated using a wide range of commercially available strip drains. In general, it is seen that all drains decrease in flow rate when severely kinked, but to widely varying degrees, i. e. , from 9% to 100%. (

Subject Headings: Drainage | Flow rates | Flow measurement | Fluid flow | Deformation (mechanics) | Laboratory tests | Soil analysis

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