The purpose of this paper is to assess the engineering geological characteristics of soil and rock, and to predict ground surface settlement due to tunneling in main part of Tabriz subway line 2 which has a length of 12 km. The total length of the excavation line is 20 km between International fair and Kara malek. Tunnels will be excavated by employing EPB Shields 9.2 m in diameter. Geology in this section is mainly composed of sand (SM), silt (ML) and Sedimentary rocks (marl, siltstone, claystone and sandstone). Laboratory experiments and field studies were conducted for the study area. Field studies consisted of geological mapping, in situ testing, core drilling and sampling for laboratory studies. Uniaxial compressive tests, triaxial compressive strength test and deformability
