TY JOUR TI Specifics of Rockfill Dam Hydraulic Calculations in Clay Soils KW Filtering embankments KW hydraulic calculation of filtering embankments KW protection against slope erosion KW filtration properties of geotextiles in a frozen state KW water-loss coefficient JO Proceedings of Petersburg Transport University AU Shtykov, V.I. AU Ponomarev, A.B. AU Yanko, Y.G. PY 2025 IS 22 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"