Tracer retention in fractured rock: Theory, characterisation and applications
a cargo de: Vladimir Cvetkovic (KTH Stockholm, Sweden)
Día: Martes 28 de Marzo a las 12:15h
Lugar: Departamento de Ing. Civil y Ambiental (DECA), UPC. Edif D1 planta 1
Retention is a key mechanism of delay for contaminants that are present or may be present in fractured rock.
This mechanism is due to tracer exchange between mobile water (fractures) and the immobile water (matrix).
Due to complex micro and macro structure of fractured rock, quantifying and characterising exchange mechanisms is still challenging.
We present the basic theory for advection-dominated transport with retention, including recent advances in describing non-Fickian mass transfer.
An overview is given of characterisation data obtained from crystalline rock on a variety of scales, from lab to field.
Predictive modelling of transport and the specific role of retention is discussed as an important application in the context of performance and safety assessment studies.