Prediction of strains in strong rock mass of the Kurzhunkul open pit mine by the kinematic analysis

Berdinova, N.O.; Sedina, Svetlana; Shamganova, L. S.; Kalyuzhny, E. S.

doi:10.25018/0236-1493-2020-4-0-58-68

Cited by 3 publications

(4 citation statements)

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“…3). Some joints that are not included in the systems form nonsystematic chaotic fracturing, which is observed in the crushing and weathering zones [17].…”

Section: Resultsmentioning

confidence: 99%

“…At present, the open-pit depth has reached -28 m (the depth is 240 m). The development of open-pit mining at the Kurzhunkul' deposit implies an increase in its depth to an absolute mark of -290 m. To solve the problem, research has been conducted to study the main actual rock mass characteristics and their influence on its stability [17].…”

Section: Methodsmentioning

confidence: 99%

“…That is, it is a small-and mediumblock rock mass. Reverse faults with a vertical amplitude of 15-20 m predominate [17]. The whole modeling process consists of the following main stages (Fig.…”

Section: Methodsmentioning

confidence: 99%

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Rock mass management to ensure safe deposit development based on comprehensive research within the framework of the geomechanical model development

Sedina¹,

Altayeva²,

Shamganova³

et al. 2022

Min. miner. depos.

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Purpose. To create and study a three-dimensional geomechanical model in order to determine the parameters of the open-pit walls and benches, ensuring safe and economically feasible mining, as well as predicting unstable zones within the open pit. Methods. A comprehensive methodological approach is used, including a systematic analysis of scientific, normative and methodological literature; analyzing the results of previously performed studies on the object; engineering-geological surveys in the near-edge rock mass of the Kurzhunkul’ deposit; laboratory testing of rock strength properties; determining the rock mass rating according to the MRMR classification; kinematic analysis of bench faces; calculating the stability of the Kurzhunkul’ deposit final boundary using the limit equilibrium method; numerical modeling of the rock mass stress-strain state at the Kurzhunkul’ deposit using the finite element method. Findings. The paper represents the results of data collection and analysis for the development of a geomechanical model of an operating iron-ore open pit in the Republic of Kazakhstan. Comprehensive geomechanical studies to substantiate the optimal parameters of the Kurzhunkul’ deposit walls and benches on the limiting contour, as well as calculations to determine the degree of the open-pit walls and benches stability have been performed. Based on the results of studying the geological-structural configuration of the deposit, as well the mathematical modeling data of stability and acting stresses, subsequently entered into a unified digital database, weakened zones have been identified. Originality. For the first time, the geomechanical model has been created for the conditions of the Kurzhunkul’ deposit, which makes it possible to combine in one database all the parameters that affect the safety of mining operations. The model takes into account structural disturbances of the rock mass that have an adverse impact on stability. Practical implications. The developed model gives a visual representation of the rock mass state at various sites of the deposit, simplifies the selection of design sections for stability calculations, facilitates the choice of optimal technical solutions and analysis, especially for complex geological structures with multiple geotechnical or geological units with different texturing and inclination.

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“…3). Some joints that are not included in the systems form nonsystematic chaotic fracturing, which is observed in the crushing and weathering zones [17].…”

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Rock mass management to ensure safe deposit development based on comprehensive research within the framework of the geomechanical model development

Sedina¹,

Altayeva²,

Shamganova³

et al. 2022

Min. miner. depos.

View full text Add to dashboard Cite

show abstract

“…The determinant of the pit wall stability is the structural geology as differently oriented tensile fractures form potential sliding triangles in the pit walls. Potentially unstable walls and benches are detected by analyzing parameters of structural faults identified in the pit wall rock mass [7][8][9].…”

Section: Research Resultsmentioning

confidence: 99%

Geomechanical substantiation of the northeastern pit wall stability in Kurzhunkul mine

Shamganova¹,

Syedina²,

Berdinova³

2021

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Geomechanical Modeling in Mining at the Elginsky Deposit

Nemova

Gavrilov

2020

Interexpo GEO-Siberia

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Using the Elginsky coal deposit as an example, the relevance of building digital models of geological objects to control the geomechanical condition of open-pit walls is shown. Physico-mechanical properties of overburden rocks are given. The results of numerical simulation of stress-strain state of the rock mass are presented. The directions of general stress displacements and zones of maximum displacements of the open-pit wall are determined and the maps of their distribution are compiled. It is shown that lower benches are more susceptible to tension.

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Prediction of strains in strong rock mass of the Kurzhunkul open pit mine by the kinematic analysis

Cited by 3 publications

References 0 publications

Rock mass management to ensure safe deposit development based on comprehensive research within the framework of the geomechanical model development

Rock mass management to ensure safe deposit development based on comprehensive research within the framework of the geomechanical model development

Geomechanical substantiation of the northeastern pit wall stability in Kurzhunkul mine

Geomechanical Modeling in Mining at the Elginsky Deposit

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