Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Detection of Permeability Defects Within Dams and Levees Through Coupled Seepage and Heat Transport Analyses
Abstract Due to several triggering causes, e.g. heterogeneity of the grain size of quarried materials, inappropriate compaction, discontinuities of displacements, dynamic effects, particles migration and internal erosion processes and animal actions, permeability defects (p.d.) are practically unavoidable in earthen structures. Their detection, usually carried out through the monitoring of seepage flow and erosion phenomena, is needed to evaluate the safety evolution of these structures and prevent exceeding serviceability (change of discharge, turbid water) or ultimate (local or global instabilities, piping, structural collapses) limit states. To this purpose, distributed thermal monitoring systems, based on optical fibers sensors, are becoming more popular. The variations in measured temperature values are not however immediately linkable to the effects of p.d., due to the ‘coupling’ of seepage flow process and heat transport mechanism through materials and foundation soils. To better understand the mutual dependence between these coupled processes and to investigate the effects of a p.d. due to internal erosion, several numerical simulations have been run. The analysis of a large scale test on a monitored experimental dyke is finally carried out.
Detection of Permeability Defects Within Dams and Levees Through Coupled Seepage and Heat Transport Analyses
Abstract Due to several triggering causes, e.g. heterogeneity of the grain size of quarried materials, inappropriate compaction, discontinuities of displacements, dynamic effects, particles migration and internal erosion processes and animal actions, permeability defects (p.d.) are practically unavoidable in earthen structures. Their detection, usually carried out through the monitoring of seepage flow and erosion phenomena, is needed to evaluate the safety evolution of these structures and prevent exceeding serviceability (change of discharge, turbid water) or ultimate (local or global instabilities, piping, structural collapses) limit states. To this purpose, distributed thermal monitoring systems, based on optical fibers sensors, are becoming more popular. The variations in measured temperature values are not however immediately linkable to the effects of p.d., due to the ‘coupling’ of seepage flow process and heat transport mechanism through materials and foundation soils. To better understand the mutual dependence between these coupled processes and to investigate the effects of a p.d. due to internal erosion, several numerical simulations have been run. The analysis of a large scale test on a monitored experimental dyke is finally carried out.
Detection of Permeability Defects Within Dams and Levees Through Coupled Seepage and Heat Transport Analyses
Cesali, Chiara (Autor:in) / Federico, Vincenzo (Autor:in)
01.09.2018
13 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Seepage Cut-Offs for Levees and Dams: The Technology Review
| British Library Conference Proceedings | 2009
| British Library Conference Proceedings | 2018