CHARACTERISTICS OF THE EXPLOSION-STABLE MINE STOPPING FROM MATERIALS BASED ON CEMENT BINDER
The paper presents the research results of the distribution of direct and shearing stresses in stoppings in relative coordinates under the explosion shock wave effect, rock pressure, temperature, maximum stress are determined, the comparison with their limiting values are made under the boundary conditions in the form of rigid fixing and hinge support along the contour with various source data. the direct stresses over the height of the stoppings with hinged fastening are found to be dominant, and under the under the explosion shock wave effect, their maximum values occur in the middle part, under the rock pressure effect of - in the lower part. A nomogram has been developed to determine the main technical characteristics of the stoppings — the thickness depending on the cross-sectional area, depth (rock pressure), and temperature. For the first time a design model was adopted and a mathematical model of the initial stress-strain state of an explosion-proof stoppings in the form of an anisotropic (isotropic) thick plate with a radius of curvature varying according to a parabolic or semicircle, with clamped or hingedly supported edges, under the action of a shock wave, rock pressure and temperature.
Keywords: MINE OPENING, EXPLOSION, STOPPING, EXPLOSION SHOCKWAVE, ROCK PRESSURE, TEMPERATURE, WIDTH, CEMENT BINDER, STRAINS.
Imprint: Peftibay G.I. Characteristics of the explosion-stable mine stopping from materials based on cement binder. Bulletin of Scientific Centre VostNII for Industrial and Environmental Safety. 2018. № 4. pp. 24-30.
Авторы: G.I. Peftibay
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