FIELD: physics.
SUBSTANCE: invention relates to physics of contact interaction of material medium, particularly, to determination of bearing capacity and stability of disperse medium under load brought about by flat stiff die. Claimed process comprises the steps that follow. Structure material medium characteristics are defined, i.e. internal friction angle φ = φstr, specific adhesion - c = cstr, specific weight - γ = γstr. At medium testing by static load process mean external pressure corresponding to mean initial (first) critical pressure 
applied by flat stiff B-wide die is calculated. Material medium bulk is considered to be a linearly deformed half-space. Mean barometric pressure is considered equal to pbar = 1.033 kg/cm2. Under barometric pressure, minimum initial (first) critical medium compression pressure is taken equal to 
where pg = (γstrh-cstr)ctgφstr is gravitational (overburden) pressure at depth h of medium mass. Note here that mean initial (first) critical medium pressure (at compression under foot and expansion beyond its edges) is defined by specified relationship.
EFFECT: possibility to define the true mean initial (first) critical medium pressure 
for any contractible material medium (heavily deformable media eg soil, peat, and lowly deformable media eg metal, concrete) via critical physical parameters, that is, internal friction angle and specific adhesion).
3 dwg
