Rehabilitation of Sliding Motorway Slopes on Deep Failure in Bulgaria

Bulgaria is situated on the Balkan Peninsula and she has highly varied relief. There are very much deep failures on here territory. The motorways cross these areas on many places. The report present three interesting case histories related to landslides on the routes, caused by existing of deep failure, underground water and increasing traffic. The amplitudes of the vertical displacements have been more them 3 m. Special structures applied for protection and rehabilitation of the route are presented. List of the structures included piles, micropiles, anchors, drainages, geoweb etc. It is proposed estimation for the risk level of new failure after the protection