Journal article
Factors affecting the hydraulic performance of infiltration based SUDS in clay
University of Copenhagen1
Geological Survey of Denmark and Greenland2
Department of Environmental Engineering, Technical University of Denmark3
Urban Water Engineering, Department of Environmental Engineering, Technical University of Denmark4
Aquanty5
Water Resources Engineering, Department of Environmental Engineering, Technical University of Denmark6
University of Waterloo7
The influence of small scale soil heterogeneity on the hydraulic performance of infiltration based SUDS was studied using field data from a clayey glacial till and groundwater simulations with the integrated surface water and groundwater model HydroGeoSphere. Simulations of homogeneous soil blocks with hydraulic properties ranging from sand to clay showed that infiltration capacities vary greatly for the different soil types observed in glacial till.
The inclusion of heterogeneities dramatically increased infiltration volume by a factor of 22 for a soil with structural changes above and below the CaC03 boundary. Infiltration increased further by 8% if tectonic fractures were included and by another 61% if earthworm burrows were added. Comparison of HydroGeoSphere infiltration hydrographs with a simple soakaway model (Roldin et al. 2012) showed similar results for homogenous soils but indicated that exclusion of small scale soil physical features may greatly underestimate hydraulic performance of infiltration based SUDS.
Language: | English |
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Publisher: | Taylor & Francis |
Year: | 2017 |
Pages: | 125-133 |
ISSN: | 17449006 and 1573062x |
Types: | Journal article |
DOI: | 10.1080/1573062X.2015.1076860 |
ORCIDs: | 0000-0003-0202-0366 , Locatelli, Luca and Binning, Philip John |