Comparative analysis of geomechanical verification the slope stability in the zone of preventive maintenance hall of the coal mine Pljevlja

Abstract

During the geomechanical verification the stability of mining facilities, it is necessary to correctly select the calculated values of the rock material properties from an engineering point of view. In order to complete the previous steps, the starting point is data collection from the open pit. This characterizes the demanding work that is put before the engineers, all with the aim of forming a quality database within which the various characteristics of rock mass, covered by the open pit, are collected and analyzed. Based on this, it is possible to adopt the calculation values of the rock material properties, all with the aim of obtaining the relevant data for the slope stability analysis using different groups of methods. This paper presents a comprehensive analysis of determination the safety factors in a part of the Hall for preventive mechanical and electrical maintenance at the Potrlica open pit. Considering the state of working slope in the position of the Hall for preventive mechanical and electrical maintenance, the system of cracks, as well as the presumed faults that occur in the mentioned zone, it is necessary to include in the analysis different groups of methods for verification the safety factor of analyzed working slope. The application of different analysis methods creates an opportunity for a comparative analysis of the obtained safety factors, which is a direct indicator of the state of analyzed working slope.

Keywords

• geomechanical stability check
• pljevlja coal mine
• finite element method
• limit equilibrium methods