TY JOUR TI MATHEMATICAL MODELLING OF SETTLEMENTS FLOODING AT MOVEMENT OF THE SURFACE WATER OF THE LOCAL DRAIN KW mathematical modeling KW flooding KW forecasting KW land relief KW liquid movement JO Problems of risk management in the technosphere AU Kalach, A.V. AU Chudakov, A.A. AU Kalach, E.V. PY 2014 IS PB Saint-Petersburg University of State Fire Service of Emercom of Russia