AP23489198 – Development of rational technology for conducting and fixing underground mine workings by means in-depth study of stress-strain state and stability

Objective of the project – To develop a rational technology for the driving and anchoring of horizontal workings in complex mining, geological and mining engineering conditions through a detailed study of the stress-strain state of the rock mass in order to increase the mining rate and reduce the capital investment.

Relevance: The relevance of the project is determined by the need for efficient and safe development of mineral resources under conditions of increasing mining depth and more complex geological conditions. The modern development of Kazakhstan’s mining industry requires the implementation of new technological solutions for the construction and operation of underground workings. The current practice of using uniform support systems does not consider the variability of rock properties, which leads to deformation risks and reduced stability of mine workings. Therefore, the development of differentiated support methods considering geomechanical characteristics and tectonic disturbances is of particular importance. The implementation of the project will enhance mining safety, improve technical and economic performance, and ensure the sustainable development of the mining industry.

Scientific supervisor: Candidate of technical sciences, Associate Professor, Almenov Talgat

Expected and achieved results: The expected and achieved results of the project include the identification of boundaries of failure-prone zones along the rock mass using numerical modeling methods, zoning of the rock mass according to stability levels with the identification of hazardous areas, and determination of the stress-strain state of the rock mass to ensure safe excavation and support of underground workings. The project also aimed to develop rational types of support systems considering the geomechanical conditions of specific sections and to establish a comprehensive methodology for stability analysis using both modern software tools and traditional approaches. In 2025, studies were carried out to determine the boundaries of failure-prone zones using Midas GTS NX, Rocscience RS2/RS3, and Ansys software. Zoning of the rock mass by stability degree was performed, which made it possible to localize potential failure zones. The drift at the +230 m level of the Beskempir deposit and the surrounding rock mass were investigated, stress-strain state models were developed, and zones of stress concentration were identified. Based on these results, combined support systems adapted to the geomechanical conditions of individual sections were designed. The stability of the rock mass was analyzed using RMR classification, Barton's Q-system, and regulatory methods (SNiP), which allowed classification of rocks by stability categories and determination of rational support parameters for each section. Rock pressure calculations were carried out, and support structures were substantiated considering physical properties of rocks and the influence of tectonic faults. Additionally, geomechanical processes were studied, including deformation prediction and prevention of underground collapses. The obtained results confirm the effectiveness of numerical modeling and an integrated approach in improving the safety of mining operations. Overall, all tasks planned for 2025 have been fully completed, and the results demonstrate high scientific and practical significance for the mining industry.

List of publications with links to them

1. Almenov T., Zhanakova R., Sarybayev M., Shabaz D.-M.
   A Novel Approach to Selecting Rational Supports for Underground Mining Workings // Civil Engineering Journal. – 2025. – Vol. 11, No. 3. – P. 1217–1241.
   DOI: http://dx.doi.org/10.28991/CEJ-2025-011-03-022
2. Almenov T.M., Zhanakova R.K., Askarova G.E., Shautenov M.R., Amantayuly K.
   Comprehensive assessment of ore losses and dilution impacting Vasilkovsky gold deposit profitability // News of the National Academy of Sciences of the Republic of Kazakhstan. Series of Geology and Technical Sciences. – 2025. – Vol. 4, No. 472. – P. 27–45.
   DOI: https://doi.org/10.32014/2025.2518-170X.528
3. Жанакова Р.К., Алменов Т.М., Сарыбаев М.М.
   Исследование напряженно-деформированного состояния горных пород вокруг транспортного штрека на примере Акбакайского рудного поля // Труды университета. – 2025. – №2 (99). – С. 74–79.
   DOI: https://doi.org/10.52209/1609-1825_2025_2_74
4. Жанакова Р.К., Алменов Т.М., Сарыбаев М.М.
   Особенности инженерно-геологических условий Бескемпирского месторождения и влияние на строительство горных выработок // Труды университета. – 2025. – №3 (100). – С. 108–112.
   DOI: https://doi.org/10.52209/1609-1825_2025_3_108
5. Almenov T., Zhanakova R., Sarybayev M., Seutkazynova B., Shabaz D.-M., Nurperzent B.
   Innovative Compositions of Shotcrete Mixtures for Reinforcement of Underground Mine Excavations // HighTech and Innovation Journal. – 2025. – Vol. 6, No. 4.
   ISSN: 2723-9535. – (на стадии публикации).