Open AccessTUNNEL DESIGN CHALLENGES AT THE EXAMPLE OF DIVAČA KOPER RAILWAY LINE
Author(s) -
Vojkan Jovičić
Publication year - 2020
Publication title -
savremena teorija i praksa u graditeljstvu
Language(s) - English
Resource type - Journals
ISSN - 2566-4484
DOI - 10.7251/stp2014368j
Subject(s) - karst , new austrian tunnelling method , diva , drill , flysch , geology , line (geometry) , railway line , enhanced data rates for gsm evolution , engineering , mining engineering , civil engineering , geotechnical engineering , mechanical engineering , geomorphology , telecommunications , art , paleontology , excavation , geometry , mathematics , structural basin , visual arts
New Divača-Koper railway runs through the karst area associated with the major thrust fault, whichdivides limestone and flysch strata known as the Karst Edge. Due to some 400m high difference inaltitude between Divača and Koper most of the railway line runs underground, featuring two six toseven kilometers long tunnels. Two types of tunneling methods were considered: TBM and drill andblast method based on NATM. The advantages and shortcomings of each method are discussed andthe set of reasons is given why TBM was not selected as a preferred solution. The main designchallenges encompassing the overcoming of the karst phenomena and protection of the waterresources are presented in the paper.