TY JOUR TI Mechanisms for generating lateral earth pressure at rest based on a simplified discrete sand model KW granular media KW sand KW coefficient KW friction KW sand microstructure KW modelling JO Proceedings of Petersburg Transport University AU Slivec, K.V. AU Kravchenko, P.A. PY 2026 IS 23 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"