DETERMINATION OF THE MAXIMUM HEIGHT OF A ROCK DUMP
The paper studies a dump in the form of a truncated cone. It is assumed that the stability loss of the dump slope occurs due to the weight of the overlying layers, while the weight of these layers acts as a stamp on the horizontal surface. As a result, a plastic domain is formed under the stamp. The domain has the same slope to the horizontal plane, regardless of the stamp size. Then, the domain position under the stamp, at which the pressure (due to the weight of the overlying layers) will be maximum, is determined. By solving the problem of the material transition under the stamp into a plastic state we find the maximum load for the stamp. The load is determined by the properties of the rock-clutch and the angle of internal friction. For the solution of the plastic problem we have used the results obtained in the works of V.G. Berezantsev. As a result of comparison of these two loads, the maximum allowed height of the dump is obtained, depending on the slope angle and physical and mechanical properties of the dump material.