Concept
Bed (geology)
Related publications (48)
Hydro-mechanical behaviour of shallow Opalinus Clay shale
Lyesse Laloui, Alessio Ferrari, Eleonora Crisci
In Switzerland, Opalinus Clay shale has been selected as the host formation for radioactive waste disposal. The minimum required depth of the repository is related to the long-lasting isolation required for the disposal (1 million years). During this perio ...
2019Hydro-mechanical response of Opalinus Clay shale: dependency on composition and burial depth
Shales are sedimentary formation currently studied for their involvement in many geo-energy related applications, such as radioactive waste disposal, CO2 sequestration, oil and gas extraction.
In Switzerland the Opalinus Clay shale has been selected has ho ...
EPFL2019Interplay of hyporheic exchange and fine particle deposition in a riverbed
Hyporheic flow transports fine particles into the riverbed, which can lead to clogging of the bed and in turn affect hyporheic flow and exchange processes. Field measurements and numerical simulations show the formation of a low-permeability layer (LPL) ne ...
2019A Physical Model for the Uprooting of Flexible Vegetation on River Bars
Sediment deposition and bank accretion are promoted by the establishment and growth of pioneer plant species, a direct consequence of plant survival during flood events. Similarly, the uprooting of riparian vegetation on river bars during floods can subseq ...
2019Robust and adaptive approaches for Relative Geologic Time Estimation
For a geoscientist, the Relative Geologic Time (RGT) is an important tool to perform chronostratigraphic analysis. However, automatically estimate an RGT image from a seismic image can be a challenging task where we have to respect seismic features, the de ...
ELSEVIER SCIENCE BV2018The Role of Anisotropy on the Volumetric Behaviour of Opalinus Clay upon Suction Change
Lyesse Laloui, Alessio Ferrari, Eleonora Crisci, Alberto Minardi
An experimental investigation to analyse the anisotropic volumetric response of shaly and sandy facies of Opalinus Clay upon suction variations is presented. Obtained results demonstrate the different behaviour of the tested facies to a wetting-drying cycl ...
Springer2017Influence of outlet discharge on the efficiency of turbidity current venting
Sediment yield into reservoirs was underestimated during the design of dams in the past. As a result, today, reservoir sedimentation is endangering the sustainability of dams. Moreover, the obstruction of rivers hinders their capacity to transport sediment ...
EPFL2017INVESTIGATION OF TURBIDITY CURRENT VENTING FOR TWO DIFFERENT RESERVOIR BED SLOPES
Anton Schleiss, Giovanni De Cesare, Sabine Chamoun
Reservoirs represent an important source of energy that should be preserved and sustained. However, the lifetime of reservoirs is being reduced due to natural processes such as sedimentation. To face this problem, different sediment mitigation techniques a ...
2017Anisotropic Volumetric Response of Shales upon Suction Changes
Lyesse Laloui, Alessio Ferrari, Alberto Minardi
Anisotropic fabric and volumetric response to suction changes represent two main features of shales, which are involved in several engineering applications. However, a comprehensive understanding of the interaction between these two aspects is still missin ...
2016Frictional Properties of Opalinus Clay
Marie Estelle Solange Violay, Luis Felipe Orellana Espinoza
Opalinus Clay (OPA) is the host rock being proposed in Switzerland for disposal of high-level radioactive waste. The stability of fault zones within this formation is a key issue to ensure long-term performance of the repository. To understand the friction ...
2016