PREDICTION AND EVALUATION OF THE STABILITY OF SIDES, SECTION LIPS AND SLOPES IN A COAL DEPOSITS USING THE GEOSTUDIO AND PLAXIS 3D SOFTWARE COMPLEXES

The work is devoted to the issues of predicting and assessing the stability of the sides, ledges of sections and slopes of dumps using the Geostudio and Plaxis 3D software packages. The calculations were carried out on the example of a coal deposit located in the Republic of Tyva. In the process of performing the work, the physical and mechanical characteristics of the soils were established, the design schemes for deformation and the assessment of the stability of the sides and ledges of the quarry were analyzed. Using the presented software systems, the stability of dumps, sides and ledges of the open pit was calculated. In addition, the influence of the uncertainty of the initial data on the probability of collapse in the field was established and the dependences of the stability factor on the specific load on the ledge during the development of the field were determined. Some differences in the obtained values with the use of software products are fixed. As a result of calculations of the stability of the dump slopes at the field, it was found that the dump slopes are stable when berms are left between the tiers.