ABSTRACT
The construction of the highway E-80 has begun in Serbia, which will represent the traffic hub of the Western Balkans and will be part of the main regional transport network of Southeast Europe. Its total length through Serbia is 77 km, and one part of the route is designed through a typical plain terrain, while a larger part of the route passes through hilly terrain. The construction of the tunnel “Debelo brdo” is planned partly in an open cut excavation with a length of 240 m, and partly with an underground excavation with a length of 190 m. The geotechnical conditions of tunnel construction in open cut excavation, and especially the geotechnical conditions of tunnel excavation, will be presented in the paper.
