%0 Journal Article %T Improvement of soil properties in tunnel construction, as demonstrated by the Severomuya Tunnel construction %A Filippov, S.L. %K injection, filtration, strengthening/stabilization, soils, deformations %J Proceedings of Petersburg Transport University %D 2026 %N 23 %P 7 %I FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"