International audienceThe French national institute for industrial environment and risks (ineriS), in a support mission to state services and as a partner of the european project FLOMineT, is studying gas migration during and after mine flooding. in situ flow measurements and laboratory records acquired with an experimental device are being used to study gas transfer and to characterize the influence of hydrostatic pressure on methane release from coal. in parallel, several models are in development using the HYTec code to describe mine methane migration. The combined use of numerical and experimental approaches will make it possible to improve risk prevention concerning surface gas emission above the old mines
