Staff Lead researcher Professor William Powrie Professor of Geotechnical Engineering Research interests Railway track and trackbed behaviour and performance. Geotechnical transportation infrastructure (earthworks, retaining walls, tunnels). Groundwater and groundwater control. Connect with William Email: w.powrie@soton.ac.uk Other researchers Dr Joel Smethurst BEng PhD GMICE FHEA Associate Professor Research interests The effects of vegetation and climate on the performance of earthworks (cuttings and embankments) The stabilisation of both infrastructure slopes and large landslides using discretely spaced piles The mechanical stabilisation of soil by plants roots Connect with Joel Email: j.a.smethurst@soton.ac.uk