Justification of a dual ventilation system for the complete burial of high-level radioactive waste in spent open mines

Authors

DOI:

https://doi.org/10.15587/1729-4061.2025.336110

Keywords:

radioactive waste, spent mines, ventilation system, heat management, repository safety

Abstract

The complete burial of high-level radioactive waste (HLW) in spent open mines presents a promising solution to long-term waste isolation. This study presents the justification and design of an innovative dual ventilation system aimed at regulating heat and removing gas-dust mixtures from such repositories. The ventilation system is designed to control dust-gas emissions and thermal loads through a two-chimney configuration, enabling efficient gas extraction and convective cooling. A system of main and additional chimneys is proposed: the main chimney channels the rising hot gas-dust mixture, while the additional chimney processes it through a staged treatment system before final disposal. Mathematical modeling, including Fourier’s Law, Darcy’s Law, and Fick’s Law, supports the thermal, hydraulic, and gas dynamics simulations. The study demonstrates that with adequate ventilation flow and composite-layer insulation, internal repository temperatures can be reduced from 300°C to below 100°C within 30 years, significantly lowering the risk of container degradation and gas-induced particle mobilization. The integrated system improves the safety, observability, and long-term reliability of HLW burial in open spent mines, offering a scalable and internationally compliant solution. Through a combination of temperature distribution modeling, structural analysis, and airflow simulations, the system's viability is demonstrated. The results show that the proposed ventilation configuration provides effective thermal regulation, structural resilience under stress, and compatibility with repurposed mining infrastructure. The study contributes a scalable, energy-efficient solution to HLW (High-level radioactive waste) repository management, paving the way for safer and more sustainable nuclear waste isolation

Author Biographies

Talgat Kaiym, International IT University

PhD, Professor

Department of Mathematical and Computer Modeling

Amandyk Tuleshov, Institute of Mechanics and Mechanical Engineering named after Academician U. A. Dzholdasbekov

PhD, Professor

Department of Mechanics

Askar Seidakhmet, Institute of Mechanics and Mechanical Engineering named after Academician U. A. Dzholdasbekov

PhD, Professor

Department of Mechanics

Suleimen Kaimov, Institute of Mechanics and Mechanical Engineering named after Academician U. A. Dzholdasbekov

PhD, Researcher of Mechanics

Department of Mechanics

Aidarkhan Kaimov, Al-Farabi Kazakh National University

PhD, Information Technology Specialist

Department of Information Systems

Abylay Kaimov, Institute of Mechanics and Mechanical Engineering named after Academician U. A. Dzholdasbekov

PhD, Researcher of Mechanics

Department of Mechanics

Azil Zamanbek, Al-Farabi Kazakh National University

PhD Student

Department of Mechanics

Yelaman Abussagatov, Al-Farabi Kazakh National University

PhD Student

Department of Mechanics

Aliman Alibek, International IT University

PhD Student

Department of Mechanics

Kaiyrtay Issabayev, Military Engineering Institute of Radio Electronics and Communications

PhD, Professor

Department of Mechanics

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Justification of a dual ventilation system for the complete burial of high-level radioactive waste in spent open mines

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Published

2025-08-28

How to Cite

Kaiym, T., Tuleshov, A., Seidakhmet, A., Kaimov, S., Kaimov, A., Kaimov, A., Zamanbek, A., Abussagatov, Y., Alibek, A., & Issabayev, K. (2025). Justification of a dual ventilation system for the complete burial of high-level radioactive waste in spent open mines . Eastern-European Journal of Enterprise Technologies, 4(10 (136), 6–27. https://doi.org/10.15587/1729-4061.2025.336110