Laser Scanning Analysis and Landslide Risk Assessment on Transportation Network: The Lugnano in Teverina (Umbria Region, Italy), Landslide Case Study

The present paper reports a multi-disciplinary team work, involving professionals, research institutes and public administration, for defining and applying low-impact techniques for risk assessment and mitigation of landslide areas. A study area located at Lugnano in Teverina (Umbria Region, Italy) and interested by landslides triggered by heavy rainfall and affecting important railway and road networks, was considered. A geological field survey has been carried out (including in situ and laboratory tests) in order to define strength parameters to be used in the stability analysis, for the detection of the most active area (residual risk) and implementation of preliminary design. In order to identify landslide surface and estimate the involved volumes, 3D laser scanner acquisition has been performed at different times. The obtained results stress the importance of performing different analysis in the light of reducing the impact of landslides on critical infrastructures by promoting low-environmental and sustainable solutions.