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- Title
Thermal Environment Control at Deep Intelligent Coal Mines in China Based on Human Factors.
- Authors
Han, Qiaoyun; Lin, Debo; Yang, Xiaojie; Li, Kongqing; Yin, Wei
- Abstract
Mechanical cooling of the entire mining tunnel, widely used in deep coal mines, has a significant energy-intensive consumption, particularly for intelligent mining tunnels. Therefore, localized cooling would benefit the intelligent mining industry. Current studies on the temperature, relative humidity, and air velocity under localized cooling for working protection are still unclear. A modified predicted heat strain model that is appropriate for warm and humid conditions is presented in this article and calculated using MATLAB. Results reveal that air temperature was the primary factor affecting underground miners' safety. Increasing air velocity would improve the working environment when the thermal humidity index is lower than 32. Reducing total working time and wet bulb temperature would benefit underground miners' security. For the cooling of intelligent mining tunnels, the recommended air velocity would be 2 m/s, and the maximum wet bulb temperature would be 28 °C for the 6-h working period and 26 °C for the 8-h working period. Results would be beneficial to the cooling of intelligent mining in China.
- Subjects
CHINA; INTELLIGENT control systems; ATMOSPHERIC temperature; COAL mining; HUMIDITY; WORK environment; COAL mining accidents; MINERAL industries
- Publication
Sustainability (2071-1050), 2023, Vol 15, Issue 4, p3193
- ISSN
2071-1050
- Publication type
Article
- DOI
10.3390/su15043193