Kapillarzonens effekt på grundvandsstigninger og uvedkommende vand i urbane områder
Oversat titel
The effect of the capillary fringe on groundwater rise and extraneous water in urban areas
Forfatter
Semester
4. semester
Uddannelse
Udgivelsesår
2025
Afleveret
2025-10-20
Antal sider
111
Abstract
As winter precipitation increases due to climate change, Danish urban areas are experiencing rising groundwater levels, leading to infiltration of extraneous water into sewer systems and damage to infrastructure. This thesis investigates the role of the capillary fringe in these hydrological phenomena, focusing on the urban areas of Beder and Kærby. Through field data, laboratory experiments, and numerical modeling, the study analyzes soil hydraulic properties and their influence on capillary rise and groundwater dynamics. Both Campbell and van Genuchten models are used to describe soil water retention and hydraulic conductivity across different soil types. A 1D numerical model based on the Moving Mean Slope model is applied to simulate capillary rise and water content profiles over time. The results show that both soil texture, layering and compaction have a major influence on the capillary fringe and the capillary rise. The thesis concludes that the capillary fringe is a critical factor in understanding shallow groundwater behavior in urban areas, and that detailed soil characterization is essential for accurate modeling and risk assessment of extraneous water. Page