TY JOUR TI ABOUT THE PECULIARITIES OF THE DEVELOPMENT AND FUNCTIONING OF THE SAINT-PETERSBURG METRO KW Saint-Petersburg metro KW development KW types of stations KW fire safet JO NATURAL AND MAN-MADE RISKS (PHYSICO-MATHEMATICAL AND APPLIED ASPECTS) AU Tarantsev, A.A. AU Klyuj, V.V. AU Shupnev, D.S. PY 2025 IS 2025 PB Saint-Petersburg University of State Fire Service of Emercom of Russia