TY JOUR TI A Mathematical Model of a Large-Diameter Tunnel Block Lining KW Tunnel KW double-track lining KW tunnel boring machine KW mathematical modelling KW finite element method JO Proceedings of Petersburg Transport University AU Ledyaev, A.P. AU Sokornov, A.A. AU Kon'kov, A.N. PY 2025 IS 22 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"