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A Comprehensive Set of Cooling Measures for the Overall Control and Reduction of High Temperature-Induced Thermal Damage in Oversize Deep Mines: A Case Study

Author

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  • Wei Zhang

    (State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou 21116, China
    School of Mines, China University of Mining and Technology, Xuzhou 221116, China)

  • Tianyi Wang

    (School of Mines, China University of Mining and Technology, Xuzhou 221116, China)

  • Dongsheng Zhang

    (State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou 21116, China
    School of Mines, China University of Mining and Technology, Xuzhou 221116, China)

  • Jiajia Tang

    (School of Mines, China University of Mining and Technology, Xuzhou 221116, China)

  • Peng Xu

    (School of Mines, China University of Mining and Technology, Xuzhou 221116, China)

  • Xu Duan

    (School of Mines, China University of Mining and Technology, Xuzhou 221116, China)

Abstract

The mining process in deep mines occurs at elevated temperatures and thus is significantly jeopardized by the thermal damage. In this study, the main factors causing high-temperatures under particular mining geological and prevailing conditions of coal mine production, namely for the Longgu Coal Mine (LCM) in Shandong Province of China, were specified and analyzed in detail. This included exothermic heat from the surrounding rock of an underground roadway, inflow of high-temperature water, seasonal temperature rise, mechanical and electrical equipment operation, and airflow compression in the mine. The integrated artificial cooling mode was implemented on the basis of the original normal ventilation and cooling facilities of the LCM, which involved cooling by mobile refrigeration units, water source heat pump refrigeration units, and a ground centralized ice-cooling radiation system, as well as the underground centralized cooling system provided by Wärme-Austausch-Technik (WAT) GmbH. Eventually, a comprehensive set of measures for the overall control and reduction of high-temperature-induced damage was realized, which ensured more effective cooling of the LCM. Thus, the average temperature of the main operation sites was reduced by 8 K, while that of the underground working faces was maintained at 299.15 K. These measures also resulted in excellent technical and economic benefits: the total three-year increase in revenue and savings reached 76.3 million USD, hence relevant findings of the study are expected to provide technical guidance on the treatment of high-temperature-induced damage in deep mines.

Suggested Citation

  • Wei Zhang & Tianyi Wang & Dongsheng Zhang & Jiajia Tang & Peng Xu & Xu Duan, 2020. "A Comprehensive Set of Cooling Measures for the Overall Control and Reduction of High Temperature-Induced Thermal Damage in Oversize Deep Mines: A Case Study," Sustainability, MDPI, vol. 12(6), pages 1-18, March.
    • Handle: RePEc:gam:jsusta:v:12:y:2020:i:6:p:2489-:d:335672
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    References listed on IDEAS

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    1. Brian Owens, 2013. "Mining: Extreme prospects," Nature, Nature, vol. 495(7440), pages 4-6, March.
    2. Mustafa Omer, Abdeen, 2008. "Ground-source heat pumps systems and applications," Renewable and Sustainable Energy Reviews, Elsevier, vol. 12(2), pages 344-371, February.
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    Cited by:

    1. Jielin Li & Xiaoli Yu & Chonghong Huang & Keping Zhou, 2022. "Research on the Mobile Refrigeration System at a High Temperature Working Face of an Underground Mine," Energies, MDPI, vol. 15(11), pages 1-15, May.
    2. Naseer Muhammad Khan & Kewang Cao & Qiupeng Yuan & Mohd Hazizan Bin Mohd Hashim & Hafeezur Rehman & Sajjad Hussain & Muhammad Zaka Emad & Barkat Ullah & Kausar Sultan Shah & Sajid Khan, 2022. "Application of Machine Learning and Multivariate Statistics to Predict Uniaxial Compressive Strength and Static Young’s Modulus Using Physical Properties under Different Thermal Conditions," Sustainability, MDPI, vol. 14(16), pages 1-27, August.
    3. Jianan Gao & Shugang Li & Fengliang Wu & Li Ma, 2023. "Heat Transfer Model and Thermal Insulation Characteristics of Surrounding Rock of Thermal Insulation Roadway in a High-Temperature Mine," Sustainability, MDPI, vol. 15(16), pages 1-23, August.

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