A Method to Create a Horizontal Resistance Layer by Injection of a Viscous Fluid: PLAID

We present a method to create a horizontal resistance layer at desired depth below soil surface to decrease seepage over a relatively large area. The layer is produced in a continuous process by means of numerous temporary screens of wells. Between each pair of screens groundwater flow is forced in...

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Bibliographic Details
Published in:Ground water 2018-07, Vol.56 (4), p.541-546
Main Authors: de Lange, W.J., Vink, J.P.M.
Format: Article
Language:English
Subjects:
Adaptation
Chemical composition
Computer simulation
Flow distribution
Fluid filters
Fluxes
Groundwater
Groundwater flow
Horizontal loads
Horizontal orientation
Injection
Methods
Organic chemistry
Parallel flow
Screens
Seepage
Soil
Viscosity
Viscous fluids
Water flow
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Summary:We present a method to create a horizontal resistance layer at desired depth below soil surface to decrease seepage over a relatively large area. The layer is produced in a continuous process by means of numerous temporary screens of wells. Between each pair of screens groundwater flow is forced in horizontal direction. In the center of such flow, along virtual parallel flow lines, a chemical, viscous and dense fluid is injected that produces a clogging substance within several hours. The impact of density is overcome by the forced flow between screens. The impact of viscosity on the flow distribution is handled by adaptation of the fluxes and heads at the filters in the screens. The resulting procedure includes multistep injection and is supported by model simulations. Though a small‐scale proof of concept has been successful, the composition of the optimal chemical mixture needs further research. Article impact statement: We present an innovative technique to inject a continuous, horizontal, plate‐shaped resistance layer at desired depth below a seepage area.
ISSN:0017-467X
1745-6584
DOI:10.1111/gwat.12667