METHOD OF DETERMINING DEFORMATION MODULUS OF MATERIAL MEDIUM Russian patent published in 2015 - IPC G01B13/24 G01N3/12 

FIELD: physics.

SUBSTANCE: invention relates to a method of determining the overall modulus of deformation E_o and modulus of elasticity E_upr of a material medium in gravitation p_b and atmospheric pressure conditions. The method comprises using samples of the medium collected at a depth h (cm) to determine specific weight γ_str (kg/cm³), internal friction angle and specific cohesion s_str (kG/cm²); calculating, for a disrupted structure of the medium, an angle and specific cohesion s_n=s_str[2-tgφ_n/tgφ_str] (kG/cm²); determining gravitational pressure and the effective initial critical compression pressure of the sample of the medium in compression conditions Poisson ratios in the mass - as and in the walls- as in compression conditions - as testing the medium S_i=f(Δp_i-const,t) during a time t in increasing static load steps Δp_i (kG/cm²) while generating pressure on the medium which is equal to gravitational (normal) pressure unloading the medium to zero pressure p₂=0 (kG/cm²); loading the medium with pressure and pressure while measuring corresponding medium residues S₂=S₀ (cm), S₄ = stabilised over time t, and the overall moduli of deformation and elasticity of the medium are calculated using the following relationships when testing the medium with a die: 1) from the free surface of half-space and where B and d_kr are the width and diameter (cm), F_kr is the area of the die (cm²); 2) in the mass of the medium with a helical-blade die and where 3) at the bottom of a vertical opening and where 4) in the walls of the vertical opening under thrust dies and where 5) in well walls under an elastic radial die of a three-chamber pressuremeter and where l₀ is the length of the working chamber (cm); 6) in well walls under an elastic die of a single-chamber pressuremeter and where R^krI, R^b, denote the greater radii of the ellipsoid of the inflated chamber of the pressuremeter (cm); 7) in the compression chamber of a laboratory device and .

EFFECT: high accuracy.

10 dwg, 1 tbl

_{н - d}

_{атм - atm}

_{ср - sr}

_{кг/см - kG/cm2}

_{стр - str}

_{б - b}

_{kpl - kpl}

_{ср. сж - mc}

_{нн - nd}

_{м - m}

_{B - β}

_{к - с}

_{шт - d}

_{пп - hs}

_{упр - el}

_{кр - cr}

_{вш - hbd}

_{пр - pr}

_{шт -d}

_{вш - sd vd}