Application of the numerical method in the definition of a substrate of circular cross section All rights reserved eng Abstract: Looking at the stages of development of the shape of the cross-section of the horizontal room of the pit, it can be concluded, regardless of their diversity, that at the base of all shapes, trapezoidal vaulted and circular shapes, with appropriate combinations, appear as basic shapes. When applying the Phase 2 software, a circular cross-section of the room was used In order to define (design) the tunnel lining in the case of a circular cross-section, the geomechanical data of the example provided by the software producer Phase 2 was used. application/pdf 1803597 bytes info:eu-repo/semantics/conferenceProceedings Ignjatović, Dragan Đurđevac Ignjatović, Lidija Đurđevac, Vanja Milivojević, Katarina Jovanović, Ivan 2023 https://unilib.phaidrabg.rs/o:7261 cobiss:164394761 ISBN: 978-86-6305-140-9 Keywords: circular cross section, finite element method, Phase2 v 8.0. Proceedings International October Conference on Mining and Metallurgy (54 ; 2023 ; Borsko jezero) startpage: 287 endpage: 291