These structures are known as "overcasts". Where there is more than one location where mining is being carried out, legislative requirements and good mining practice require that no air used to ventilate one working location can be used to ventilate another.
This requires a number of separate circuits off the main roadways known as ventilation "splits". Other control devices are required to ensure adequate flow to all parts of the mine if not controlled, air will take the path of least resistance back to the fans.
Flow to different areas of the mine is regulated by constructing artificial restrictions in airways in the form of a stopping or doors with an opening usually of an adjustable size by the use of adjustable louvers, sliding doors, etc , such restrictions being known as "regulators". All installations such as stoppings, overcasts, doors, regulators, etc are known collectively as "ventilation control devices or VCD's". Because mine fans operate continuously and require considerable power to do so, ventilation efficiency is an important consideration and fan specification and ventilation circuit maintenance become important cost considerations.
The experimental data listed in this paper are measured and obtained from the Jinqu Gold Mine in Henan Province, China. The optimization of ventilation and thermal hazard control techniques in the paper can be applied to underground mines with similar problems. The data used to support the findings of this study are available from the corresponding author upon request.
The authors declare that there are no conflicts of interest regarding the publication of this paper. This is an open access article distributed under the Creative Commons Attribution License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Journal overview. Special Issues. Academic Editor: Hugo Rodrigues. Received 19 Mar Accepted 14 Jun Published 01 Aug Abstract In order to address the issue of high temperatures and thermal damages in deep mines, the factors causing downhole heat damage at high temperatures were analyzed, the mine ventilation system was optimized and rebuilt, and a cooling system was established.
Introduction In an era of rapid development of the global economy, the energy dependence is increasing rapidly [ 1 — 4 ]. Figure 1. Distribution map of high-temperature mine in deep mining in China.
Figure 2. Figure 3. Table 1. Table 2. The measured air volume of main roadway before and after transformation of ventilation system.
Figure 4. Figure 5. Table 3. Temperature and humidity monitoring data before and after cooling. Figure 6. Comparison of temperature and humidity on the working face. References H. Xie, H. Zhou, D. Xue et al. View at: Google Scholar J. Lai, X. Wang, J. Qiu, J. Xie, and Y. Qiu et al. View at: Google Scholar W. Zhou, H. Qin, J. He and P. View at: Google Scholar A. Sasmito, J. Kurnia, E.
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Yuan, X. Gao, H. Dust control is achieved by capture and suppression at the source which improves mine ventilation through prevention of the dust from being airborne. Blowing face ventilation: clean air is blown toward the face and sweeps the dust-laden air toward the return entries. This system allows the continuous miner operator to be positioned in the clean discharge air at the end of the blowing curtain or tubing.
Exhausting face ventilation: clean air sweeps the face, and the dust-laden air is then drawn behind the return curtain or through the exhaust tubing to the return entries. The system will keep mobile equipment in fresh air and affords the continuous miner operator more freedom of movement than a blowing ventilation system. Mine ventilation systems are important for the safe operation of underground mines and provided fresh air flow and remove the contaminated air.
Underground mine ventilation systems also lower the heat and humidity of working surfaces. Poor mine ventilation in the underground mines is one of the main causes of over exposure to dust in coal mines. Exposure to coal dust kills! Dealing with coal mine dust at its source is a matter of saving lives.
Is your mine ventilation system effective in eliminating exposure to coal dust in underground mining? Are your underground coal mining workers aware of the dangers of exposure to coal dust? Reach out to GRT for expert advice on sound underground coal dust management plans that complement ventilation control of dust in coal mines. Your feedback is important to us. Colinet et al. Information Circular Logachev, I.
CRC Press. Swinderman, R. Martin Engineering. Request Free Quote. Ventilation control of dust in coal mines August 3, In Industry Articles. By Troy Adams. Ventilation control of dust in coal mines will be assessed by answering the following questions: What is a mine ventilation system? Get Free Quote.
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