METHOD FOR DETERMINING GRAVITY PRESSURE AND COEFFICIENTS OF GENERAL LATERAL PRESSURE AND GENERAL RELATIVE LATERAL DISTORTION OF SOIL AND PEAT GROUND Russian patent published in 2015 - IPC G01N33/24 E02D1/00 

FIELD: physics.

SUBSTANCE: invention refers to physics of material contact interaction of a both natural, and damaged ponderable medium in mass and at a crest of slopes. The parameters of an angle of internal friction φ_str and a specific cohesion с_str of the sampled medium taken at a depth h of the ponderable material mass are determined in the laboratory environment. The dependences φ_d=arcsin[2sinφ_str/(1+sin²φ_str)]- φ_str, c_d=c_str[2-tgφ_d/tgφ_str] are used to derive the parameters of an angle of internal friction and a specific cohesion of the structurally damaged medium at a survey depth respectively, wherein p_n=(γ_strh-c_str)ctgφ_str is a natural pressure at the depth h. A tangential natural pressure at the depth h is defined as τ_xy=p_x=p_y=γ_strh·cos²φ_str. The dependence derived by the author is used to determine the parameters of a coefficient of general lateral pressure of the medium at rest $${\zeta }_0^{str}=\mathrm{0,5}\sin 2{\phi }_{str},$$ at damaged natural mass structure $${\zeta }_0^d=\mathrm{0,5}\sin 2{\phi }_d,$$ in open pit walls $${\zeta }_{0atm}^{str}={\gamma }^{str}h\cdot \cos {\phi }^{str}/\left[\left({\gamma }^{str}h-c^{str}\right)ctg{\phi }^{str}+p_{atm}\right]=\frac{c^{str}{\cos }^2{\phi }^{str}\left(1+\sin {\phi }^{str}\right)}{c^{str}\cos {\phi }^{str}\left(1-\sin {\phi }^{str}\right)+p_{atm}\left(1+{\sin }^2{\phi }^{str}\right)}$$ and in open pit walls with damaged structure $${\zeta }_{0atm}^d={\gamma }^{d}h\cdot {\cos }^2{\phi }^d/\left[\left({\gamma }^{d}h-c^d\right)ctg{\phi }^d+p_{atm}\right]=\frac{c^d{\cos }^2{\phi }^d\left(1+\sin {\phi }^d\right)}{c^d\cos {\phi }^d\left(1-\sin {\phi }^d\right)+p_{atm}\left(1+{\sin }^2{\phi }^d\right)}.$$ Coefficients of general relative lateral distortion of the medium mass are determined according to the dependence derived by the author $${\nu }_0^{str}=\sin 2{\phi }^{str}/\left(2+\sin 2{\phi }^{str}\right),$$ $${\nu }_0^d=\sin 2{\phi }^d/\left(2+\sin 2{\phi }^d\right)$$ respectively, $$\begin{array}{l}{\nu }_{0atm}^{str}={\gamma }^{str}h\cdot \cos {\phi }^{str}/\left[\left({\gamma }^{str}h-c^{str}\right)ctg{\phi }^{str}+{\gamma }^{str}h\cdot {\cos }^2{\phi }^{str}+p_{atm}\right]=\\ =\frac{c^{str}{\cos }^2{\phi }^{str}\left(1+\sin {\phi }^{str}\right)}{c^{str}\cos {\phi }^{str}\left(1-\sin {\phi }^{str}\right)+c^{str}{\cos }^2{\phi }^{str}\left(1+\sin {\phi }^{str}\right)+p_{atm}\left(1+{\sin }^2{\phi }^{str}\right)}\end{array}$$ in side walls of an open pit, $$\begin{array}{l}{\nu }_{0atm}^d={\gamma }^{d}h\cdot \cos {\phi }^d/\left[\left({\gamma }^{d}h-c^d\right)ctg{\phi }^d+{\gamma }^{d}h\cdot {\cos }^2{\phi }^d+p_{atm}\right]=\\ =\frac{c^d{\cos }^2{\phi }^d\left(1+\sin {\phi }^d\right)}{c^d\cos {\phi }^d\left(1-\sin {\phi }^d\right)+c^d{\cos }^2{\phi }^d\left(1+\sin {\phi }^d\right)+p_{atm}\left(1+{\sin }^2{\phi }^d\right)},\end{array}$$ wherein p_atm=1.033 kg/cm² is a normal atmospheric pressure on the material medium, $${\gamma }_d=\frac{p_{n}tg{\phi }_d+c_d}{h}$$ is a specific gravity of the damaged medium.

EFFECT: more informative and reliable determination is achieved.

3 cl, 3 ex, 2 dwg