Operation Optimization of Thermal Management System of Deep Metal Mine Based on Heat Current Method and Prediction Model

Wang, Wenpu; Shao, Wei; Wang, Shuo; Liu, Junling; Shao, Kun; Cao, Zhuoqun; Liu, Yu; Cui, Zheng

doi:10.3390/en16186626

Cited by 3 publications

(2 citation statements)

References 28 publications

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“…They also pointed out that tools available to the ventilation engineer are only as good as the project inputs developed by the engineer. Wang et al [6] dealt with optimizing the performance of refrigeration and ventilation systems to reduce energy consumption. Zhong et al [7] presented an efficient ventilation network solution based on minimum independent closed loops.…”

Section: Introductionmentioning

confidence: 99%

Conditions That Determine Changing the Function of Mine Shafts in a Gassy Coal Mine—A Case Study

Szlązak,

Korzec

2024

Energies

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Ventilation plays a key role in ensuring safe exploitation in underground gassy mines. Over the years, the structure of a mine’s ventilation network changes. Therefore, it becomes necessary to construct new excavations, while some existing excavations lose their potential for future mining activity. Constructing new excavations, especially shafts, is very expensive. Therefore, mine operators are looking for solutions to ensure appropriate ventilation by reorganizing the ventilation network and using existing infrastructure, including shafts. This article presents the example of a coal mine located in the Upper Silesian Coal Basin in Poland to discuss the factors relevant to switching the function of one of the central shafts from a downcast function to an upcast one. This change is accompanied by the closure of a peripheral upcast shaft. The main aim of this change is to assess the possibility of further safe operation without the construction of new shafts. This action also results in the release of the coal currently closed in the pillar of the shaft being closed. Using a numerical model of the mine ventilation network allowed for the comparison of the considered solutions before making final decisions and implementing changes in the network. The calculations showed that it is possible to provide appropriate ventilation in the mine, but it would need to take into account certain technological assumptions, like the additional technical function of the changed shaft. This article discusses the advantages and disadvantages of modifications to the mine ventilation network, as well as their guiding principles, in the context of existing methane hazards. The procedure presented in this article can be adopted in other mine ventilation networks in which analogous modifications are considered.

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Section: Introductionmentioning

confidence: 99%

Conditions That Determine Changing the Function of Mine Shafts in a Gassy Coal Mine—A Case Study

Szlązak,

Korzec

2024

Energies

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“…However, deep mines are facing serious heat hazards due to the heat transfer of deep high-temperature rocks and geothermal water [2]. Underground high temperature working environments not only endanger workers' physical and mental health, but also cause coal seams to be unrecoverable, wasting a lot of high-quality coal resources [3,4]. In addition, mining buildings, such as workers' dormitories and meeting rooms in industrial complexes, require thermal energy for their daily operations, including heating in winter and heating of bathwater.…”

Section: Introductionmentioning

confidence: 99%

Feasibility Investigation of Geothermal Energy Heating System in Mining Area: Application of Mine Cooling and Aquifer Thermal Energy Exploitation Technique

Ding,

Zhang,

et al. 2024

Energies

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Mine heat hazards have resulted in large amounts of high-quality coal resources in deep that cannot be mined. The mining industry is paying more and more attention to the extraction and utilization of geothermal energy in mines, while at the same time reducing the underground temperature to realize co-extraction of coal and heat. In addition, coal mines tend to burn large amounts of coal to heat mine buildings and provide hot water for workers’ daily baths, creating operating costs and increasing greenhouse gas emissions. Therefore, it is of great significance to investigate the feasibility of extracting geothermal energy to provide the daily heat load for mines. Currently, there is little research on the feasibility of geothermal energy extraction and utilization in productive mines instead of abandoned mines. In this study, according to the actual situation of Xinhu mine in eastern China, a combined geothermal water system and heat-pump heating system is proposed, aiming to effectively realize mine cooling and geothermal exploitation and utilization. The geothermal storage capacity in the area is analyzed, and an economic analysis is developed. The economic analysis indicates that the main factors affecting the feasibility of the system are the number of mine users, the distance from the geothermal production well to the mine buildings, and the coal price. The research shows that the economic efficiency of the system is better when the heating scale is larger and the distance is smaller. As coal prices rise, the combined geothermal water and heat-pump heating system will be more economical than traditional coal heating. If a mine has 2000 workers, the application of this system can prevent 334.584 t of CO2 emissions per year.

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Numerical investigations of unsteady heat transfer in ultra-long roadways with periodic fluctuation of airflow temperature

Li,

Xu,

et al. 2024

Energy Sources, Part A: Recovery, Utilization, and Environmenta

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Operation Optimization of Thermal Management System of Deep Metal Mine Based on Heat Current Method and Prediction Model

Cited by 3 publications

References 28 publications

Conditions That Determine Changing the Function of Mine Shafts in a Gassy Coal Mine—A Case Study

Conditions That Determine Changing the Function of Mine Shafts in a Gassy Coal Mine—A Case Study

Feasibility Investigation of Geothermal Energy Heating System in Mining Area: Application of Mine Cooling and Aquifer Thermal Energy Exploitation Technique

Numerical investigations of unsteady heat transfer in ultra-long roadways with periodic fluctuation of airflow temperature

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