Spatial optimization of the development workings system based on a three-dimensional geological-mathematical model under the conditions of the mine “Samarska”
DOI:
https://doi.org/10.33271/crpnmu/86.129Keywords:
geological-mathematical model, three-dimensional geological modelling, spatial optimization, devel-opment workings, multi-criteria optimization, TIN models, mining suitabilityAbstract
Purpose. The purpose of this study is to develop the theoretical foundations and a methodological framework for the spatial optimization of development workings based on a three-dimensional geological-mathematical model of the с5 coal seam under the conditions of the Samarska Mine (PJSC DTEK Pavlohradvuhillia), integrating three-dimensional geological modeling with multi-criteria optimization methods.
The methods. The research was conducted using three-dimensional geological modeling, TIN-based approximation of the coal seam roof and floor surfaces, spatial analysis of mining-geological parameters, construction of an integrated mining suitability index, and multi-criteria optimization of development workings trajectories.
Findings. A three-dimensional geological model of the c5 coal seam under the conditions of the Samarska Mine was developed, and the spatial distribution of seam thickness was analysed, revealing variations from 0.63 to 1.21 m. Thirteen extraction panels were delineated, with total recoverable reserves of 2.52 × 10⁶ m³. The parameters of the development workings for each panel were determined. The results indicate that the length of the development workings increases along the strike of the seam from 910 to 1457 m, whereas the overall seam dip decreases from 3.14° to 2.15°. The analysis demonstrates that the central part of the mine field provides the most favourable conditions for roadway development, exhibiting a balanced combination of roadway length, elevation difference, and permissible gradients.
The originality. A pattern of changes in the parameters of a mine field's reserve development system was established depending on the spatial correlation between mining suitability and mining-geological risk. It was demonstrated that a change in the integral seam development index (I=G−R) from 0.79 to 0.78 is accompanied by a nearly linear increase in the length of extraction pillars from 910 to 1,457 m and a simultaneous decrease in the maximum deviation angle of the development workings from 6.09° to 3.8° of the development system parameters.
Practical implications. The proposed approach enables the rational determination of mine development system parameters, adapts the layout of development workings to the spatial heterogeneity of the coal seam, and improves the efficiency of mine planning.
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