%0 Journal Article %T The key-segment extrusion during the construction of large-diameter transport tunnels %A Konstantinov, V.D. %A Novikov, A.L. %A Sokornov, A.A. %K refabricated high-precision reinforced concrete lining with increased water resistance, keysegment, tunnel boring machine, large-diameter tunnels, mathematical modeling, friction force %J Proceedings of Petersburg Transport University %D 2024 %N 21 %P 12 %I FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"