In-situ measurements of soil water content and suction to assess river embankments stability under transient flow conditions

Irene Rocchi, C.G. Gragnano, G. Gottardi, L. Govoni, M. Bittelli

Research output: Contribution to conferencePaperResearchpeer-review

Abstract

The evaluation of river embankments stability is a key aspect in geohazard assessment and un-derestimating their failure risk can often produce unexpected and severe damages. Time-variable soil water content and suction distributions represent an intrinsic characteristic of river embankments, playing a funda-mental role during their stability assessment. To obtain a realistic estimate of these distributions in time and space – as a function of river water levels – a combination of field measurements, laboratory testing and ap-propriate calibrated numerical analyses should be used in a complementary way. For preliminary analyses, however, the river embankments are typically assumed to be under steady state conditions and this assumption provides overconservative results in terms of global safety at most times. Soil suction and water content were monitored at different depths within the embankment at the test site along river Secchia, north of the city of Modena (Italy), in order to study transient flow conditions and use it as input for probabilistic numerical anal-yses of the river embankment stability.
Original languageEnglish
Publication date2018
Number of pages6
Publication statusPublished - 2018
Event7th International Conference on Unsaturated Soils - Hong Kong University of Science and Technology, Hong Kong, Hong Kong
Duration: 3 Aug 20185 Aug 2018
Conference number: 7

Conference

Conference7th International Conference on Unsaturated Soils
Number7
LocationHong Kong University of Science and Technology
Country/TerritoryHong Kong
CityHong Kong
Period03/08/201805/08/2018

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