We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Slope Stability of a Scree Slope Based on Integrated Characterisation and Monitoring.
- Authors
Lucas, Daisy; Fankhauser, Kerstin; Maurer, Hansruedi; McArdell, Brian; Grob, Reto; Herzog, Ralf; Bleiker, Ernst; Springman, Sarah M.
- Abstract
Three years of geotechnical seasonal field monitoring including soil temperature, suction and volumetric water content plus geophysical measurements, lead to a preliminary ground model and assessment of slope stability for a steep scree slope in the Meretschibach catchment, near Agarn village in the Swiss Alps. Building on data reported in a previous paper, which focused on preliminary ground characterisation and seasonal field monitoring, this current research aims to understand whether a surficial failure in the scree slope, triggered by rainfall and depending on bedrock conditions, would represent a relevant natural hazard for Agarn village. A final year of field data is included as well as site-specific sensor calibration, a Ground Penetrating Radar (GPR) profile, and laboratory triaxial testing to provide strength parameters. A bedrock map is presented, based on GPR, with a realistic ground model of the entire scree slope. Furthermore, a preliminary numerical analysis, performed using SEEP-SLOPE/W, shows the influence of a bedrock outcrop observed in the field, for a specific soil thickness, strength parameters and rain intensity. The stability of a gravelly slope decreases with groundwater flow over a step in the bedrock, and the location of the failure will tend to move uphill of a bedrock outcrop at a shallow depth as groundwater flow increases.
- Subjects
ALPS; SLOPE stability; GROUND penetrating radar; SOIL depth; GROUNDWATER flow; SOIL temperature; SHIELDS (Geology)
- Publication
Water (20734441), 2020, Vol 12, Issue 2, p447
- ISSN
2073-4441
- Publication type
Article
- DOI
10.3390/w12020447