Pore Pressure Response in the Upper Open Aquifier during Heavy Rainfall

Start date 01/01/2012
End date The project is closed: 31/12/2015

​For many slopes where the stability is unsatisfactory high pore pressures is one of the main potential factors causing a landslide. During precipitation water intrudes into the soil, which can cause a decrease in soil strength, which in turn is crucial and decisive for whether the slope fails or not. In rather steep slopes slides are, if they occur, rather shallow. However, if a too high pore pressure is used in the analysis, the risk for a slide might be severely overestimated.

The main purpose with this project is to study the change in the pore pressure profile in the upper 10 meters of the soil profile for different precipitation scenarios for geological sites typical for Sweden. The long term gain with the project will be the ability to make better and more reliable predictions of the pore pressure in the entire soil profile. In the long run this implies that some slopes are not unnecessarily classified as unsafe and thus costly remedial work is avoided. When a detailed stability analysis is made for a slope and accounting for an expected climate change these results will be very important from an economical point of view.

 

The project is carried out at the Division of GeoEngineering, research group Geotechnical Engineering.

Project members

Projektledare
Claes Alén

Projektdeltagare
Hanna Blomén
Göran Sällfors

Kontaktperson
Claes Alén
External partners at the project
​SGI
Chalmers Areas of Advance
​Built Environment
​MSB, SGI

Page manager Published: Mon 28 Oct 2013.