TY JOUR TI Mathematical model of the ids fix the vertical mine trunk taking into account initial porosity of material and the depth of the occurrence KW porous materials KW cylindrical body under compressive load KW the intense deformed state. JO Actual directions of scientific researches of the XXI century: theory and practice AU Gotsev, D.. AU Perunov, N.. PY 2015 IS 3 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov