Storm water infiltration in a monitored green roof for hydrologic restoration L’infiltration des eaux pluviales dans une toiture végétalisée instrumentée pour la restauration du cycle hydrologique naturel

نویسندگان

  • Anna Palla
  • John J. Sansalone
  • Ilaria Gnecco
  • Luca G. Lanza
چکیده

The objectives of this study are to provide detailed information about green roof performances in the Mediterranean climate (retained volume, peak flow reduction, runoff delay) and to identify a suitable modelling approach for describing the associated hydrologic response. Data colleted during a 13 month monitoring campaign and a seasonal monitoring campaign (September to December 2008) at the green roof experimental site of the University of Genova (Italy) are presented in the paper, together with results obtained in quantifying the green roof hydrologic performances. In order to examine the green roof hydrologic response, the SWMS_2D model, that solves the Richards' equation for two-dimensional saturated-unsaturated water flow, has been implemented. Modelling results confirm the suitability of the SWMS_2D model to properly describe the hydrologic response of the green roofs. The model adequately reproduces the hydrographs, furthermore, the predicted soil water content profile generally matches the observed values along a vertical profile where measurements are available.

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تاریخ انتشار 2010