title: Use of Automatic Target Recognition System for the Displacement Measurements in a Small Diameter Tunnel Ahead of the Face of the Motorway Tunnel During Excavation.
abstract: During construction of the Šentvid tunnel a unique opportunity arose to measure the 3D displacements ahead of the motorway tunnel excavation face, since the exploratory tunnel was already constructed in the axis of the main tunnel. According to reviewed literature such measurements had not been performed yet and several problems regarding equipment and complete scheme of the experiment needed to be overcome. The paper gives a brief description of the Šentvid tunnel project, presents significant factors that affected the choice of the geodetic equipment and describes the scheme of the experiment. A special attention is focused on the problems relating to the operation of the instrument in demanding environmental conditions (water, dust).
authors.affiliation: University of Ljubljana, Faculty of Civil and Geodetic Engineering, Jamova 2, 1000 Ljubljana, Slovenia. jklopcic@fgg.uni-lj.si.
authors.forename: Jure
authors.initials: J
authors.lastname: Klopčič
authors.affiliation: University of Ljubljana, Faculty of Civil and Geodetic Engineering, Jamova 2, 1000 Ljubljana, Slovenia. tambrozi@fgg.uni-lj.si.
authors.forename: Tomaž
authors.initials: T
authors.lastname: Ambrožič
authors.affiliation: University of Ljubljana, Faculty of Civil and Geodetic Engineering, Jamova 2, 1000 Ljubljana, Slovenia. amarjeti@fgg.uni-lj.si.
authors.forename: Aleš
authors.initials: A
authors.lastname: Marjetič
authors.affiliation: University of Ljubljana, Faculty of Civil and Geodetic Engineering, Jamova 2, 1000 Ljubljana, Slovenia. sbogati@fgg.uni-lj.si.
authors.forename: Sonja
authors.initials: S
authors.lastname: Bogatin
authors.affiliation: University of Ljubljana, Faculty of Civil and Geodetic Engineering, Jamova 2, 1000 Ljubljana, Slovenia. bpulko@fgg.uni-lj.si.
authors.forename: Boštjan
authors.initials: B
authors.lastname: Pulko
authors.affiliation: University of Ljubljana, Faculty of Civil and Geodetic Engineering, Jamova 2, 1000 Ljubljana, Slovenia. jlogar@fgg.uni-lj.si.
authors.forename: Janko
authors.initials: J
authors.lastname: Logar
keywords: 3D displacement measurements; Exploratory tunnel; automatic target recognition (ATR).