Estimate of Maximum Permissible Height of Pit Wall Based on a Rigid-Plastic Body Scheme
G. M. PODYMINOGIN, A. I. CHANYSHEV
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Krasnyi pr. 54, Novosibirsk, 630091 Russia
Keywords: maximum permissible height, plasticity, stability, pit wall slope, internal friction angle, cohesion
Abstract
The authors describe mathematical model for estimating stability of an extended pit wall. Dilatancy and internal friction angle are included. Based on a rigid-plastic body scheme, maximum permissible height of pit wall from the viewpoint of its safety is estimated. The article gives relations of the maximum permissible pit wall height, pit wall slope and rock mass properties.
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