METHOD OF DETERMINING PHYSICAL AND MECHANICAL CHARACTERISTICS OF SOIL LAYER Russian patent published in 2015 - IPC G01N33/24 

FIELD: agriculture.

SUBSTANCE: soil-ground layer is loaded in cylindrical coordinates through a circular stamp simultaneously in the vertical and shear directions according to the law of Heaviside. The shear load is applied to a circular stamp with lugs located under it uniformly circumferentially in a radial direction closer to the stamp edge, with the length of not more than half of its radius. The vertical and shear deformation of the layer of soil-ground is measured, the instantaneous modules of linear and shear deformation of the layer and parameters of test creep curves are determined with at least any three values of the deformation time t₁, t₂ and t₃, limited by the time of measurement. And the vertical load is vibration and includes static and dynamic loading. Determining the instantaneous linear and shear deformation modules of the layer and parameters of test creep curves is carried out from the mathematical expressions with the function of similarity between the base and any other of the creep curves obtained experimentally.

EFFECT: invention enables to improve the accuracy of reproduction of process of loading, measurement accuracy of deformation, and precision of determination of physical and mechanical characteristics of soil-ground layer.

4 dwg, 1 tbl