METHOD OF KHRUSTALEV E.N. FOR DETERMINING PHYSICAL PARAMETERS OF MATERIAL MEDIUM STRENGTH Russian patent published in 2017 - IPC G01N3/12 

FIELD: physics.

SUBSTANCE: method 1 for determining the physical parameters of the material medium strength by the flat rigid stamp is establishing patterns in the laboratory shift, such as unbroken soil and peat at the angle compression conditions of the internal friction and specific medium cohesion A=A_str by plotting Mohr-Coulomb of the limited medium state under pressure p_i, where τ_i - is the medium shear tension under the compressing pressure p_i, determining the calculated specific medium weight of the unbroken and broken structure and , its calculated angle of the internal friction with the broken structure , the calculated domestic pressure , at the depth h, determining the adjusted value of: 1) the specific adhesion of the immersed medium , , the gravity pressure , , the specific weight at , r_b>0 and the absence of the atmosphere pressure; 2) the specific medium adhesion with the specified values , , , - at , r_b=0 and the access of the atmosphere pressure P_atm=1.033 (kg/cm²); 3) the specific medium adhesion , , and updating the values of the specific medium weight , and updating the value of the specific medium weight , and the gravity pressure , r_b<0 and the access of the atmosphere pressure P_atm=1.033 (kg/cm²). The method 2 for determining the physical parameters of the material medium strength by the spherical stamp, involves loading the dry medium with force F of the diameter D with measuring the current slump S_t until its stabilization time t, unloading the sphere, determining its contact slump S_o and regarding the test results - a continuous adhesion A_con, the sphere is immersed in the medium, at least, three times through the torque resilient element to the predetermined depth S_t1<S_t2<S_tk, the value of which is maintained constant in the stabilization time t of the corresponding efforts P₁, P₂, P_k, then the sphere is unloaded by measuring the stamp diameter with the diameter d_k. Next, the sphere slump is calculated at the pressures p_med=P_k/[πS_o(D-S_o)], the chart S=(S_t-S_o)=ƒ(p_med) and the tangent lines to the chart points are plotted corresponding to the efforts P₁, P₂, P_k till the intersection with the x-axis; the Mohr circles are built and the tangent straight line (maxτ_str.)=p_med.⋅tgθ+C_e is led to the intersection with the x- and y-axes with the radius equal to the difference values of the p_med and their corresponding intersection values of the tangent with the x-axis limit angle θ of the internal soil friction is removed from the chart (maxτ_str)=ƒ(p_med) and the instantaneous equivalent clutch C_e is measured, the angle of the internal medium friction in the structured condition and specific cohesion are calculated, a semicircle is conducted with the radius R_o from the chart coordinate beginning (max τ_str)=ƒ(p_med), contacting it and shutting off a point at the x-axis corresponding to the limit tensile stress σ_p=2R_o=2C_e⋅cosθ/(1+sinθ), the value of which corresponds to the long cohesion . Further, the increasing force P_c>P_k is applied through the sphere to the medium till the stabilization of its limit value P_m=const at registering its corresponding S_m medium slump , in which the sector angle of the sphere semicontact with the medium is , where , and the long cohesion value is defined to the frozen medium - like , for the normal soil medium - like , for the peat medium - like: at cohesion , and the angle of the medium internal friction is clarified like . The value of the atmosphere pressure is taken for the instant equivalent medium cohesion of soil and peat at the limit angle of the internal medium friction , where - the angle of the internal medium friction with the broken structure, the specific cohesion of the structured medium of peat and soil is defined like and the value of the long cohesion - by the expression at , the structural cohesion is defined like for the frozen and normal medium of soil and peat, and the equivalent adhesion like .

EFFECT: increasing the degree of reliability and accuracy of determining the physical parameters of the material.

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