Mathematical modeling the quarry wall stability under conditions of heavily jointed rocks

Purpose. To develop techniques for estimating the pit wall stability in terms of occurring a zone heavily jointed rock mass during ore mining at Akzhal deposit (Kazakhstan), to work out measures strengthen opening and verify effectiveness developed measures. Methodology. The finite element analysis stress-strain state is implemented on basis elastic-plastic model generalized Hoek-Brown failure criterion. quality was assessed using RMR GSI rating classifications. This made it possible simulate intense fracturing by changing characteristics surface. shear strength reduction procedure used determine safety factor quarry wall. Findings. strain distributions forming have been obtained polymetallic (Kazakhstan). case creating rocks area tectonic fault considered. determined under conditions increased fracturing, as well after carrying with hardening solution. Originality. effect jointness demonstrated. A method consistent evaluation proposed considering change properties due natural factors artificial reinforcement. It shown that joint surface injection reduces strains sliding zone. Practical value. predicted formation geological deposit. possibility testing strengthening based mathematical modeling shown.