Examining the right tube entarance and exit parts of Güneyce highway tunnel (İkizdere-Rize) by means of geotechnical way

In this study, the engineering geological investigation and geotechnical design along the right tube entrance and exit of Güneyce Tunnel (Ikizdere, Rize), which is under construction on Rize-Ispir highway, were carried out. A geological map of the study area at 1/100,000 scale and another geological map along the tunnel route at 1/100 scale were prepared in order to create the geological model and define geological units. It is determined that Güneyce tunnel is being constructed in Late Cretaceous Kizilkaya Formation and Ikizdere Granitoid. Laboratory tests were conducted on rock specimens taken from the geotechnical units along the tunnel route in order to determine their physical, mechanical and elastic properties. Line survey studies were carried out along the right tube entrance and exit of the Güneyce Tunnel to define discontinuity conditions. Using the results from the line survey studies and laboratory tests, geotechnical units along the tunnel route were classified according to Q, RMR14, NATM and GSI classification systems and appropriate support designs were determined. The geological units along the Güneyce Tunnel route were divided into 2 geotechnical units according to the data gathered during the study, and their geotechnical design was done.