|
1
|
Zhu Y, Chen T, Sun S, Ji Y, Zhao D, Zhuang D, Lian Y, Rong Y, Yan J, Sun H. Influence of Air Volume and Temperature in the Air Inlet Tunnel on the Characteristics of Dust Movement. ACS Omega 2024; 9:866-878. [PMID: 38222645 PMCID: PMC10785299 DOI: 10.1021/acsomega.3c06816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 11/12/2023] [Accepted: 11/14/2023] [Indexed: 01/16/2024]
Abstract
In order to clarify the movement characteristics of dust particles in the intake tunnel and improve the underground intake tunnel environment, the main intake tunnel of Wulihou Coal Mine was taken as the engineering background, the COMSOL simulation software was adopted to establish a model, the influence of air volume and temperature on dust movement characteristics was studied, and the critical air volume and particle size of dust at room temperature were determined. The results show that with the ventilation air volume being the same, when the dust reaches the exit of the tunnel, its falling height is positively correlated with the particle size. When the dust particle size is the same, the height of the dust falling is negatively correlated with the ventilation air volume. As the particle size of dust increases, the impact of changes in air volume on its movement decreases and the trajectory of dust movement gradually becomes consistent. The height of dust falling is negatively correlated with the air flow temperature. Therefore, when other factors remain unchanged, dust pollution in the tunnel is relatively severe during the day and the dust concentration in the tunnel is higher in summer. The critical air volume for dust emission in the intake tunnel of Wulihou Coal Mine is 75.84 m3/s, corresponding to a central wind speed of 5.29 m/s in the tunnel. The critical particle size for dust emission is 1.4 μm.
Collapse
Affiliation(s)
- YeMing Zhu
- Department
of Nuclear Emergency and Nuclear Safety, China Institute for Radiation Protection, Taiyuan 030006, Shanxi, China
| | - Tao Chen
- College
of Safety and Emergency Management Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China
| | - ShuTang Sun
- Department
of Nuclear Emergency and Nuclear Safety, China Institute for Radiation Protection, Taiyuan 030006, Shanxi, China
| | - Ying Ji
- Taiyuan
Power Supply Company, State Grid Shanxi
Electric Power Company, Taiyuan 030001, Shanxi, China
| | - Dong Zhao
- College
of Safety and Emergency Management Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China
| | - DaJie Zhuang
- Department
of Nuclear Emergency and Nuclear Safety, China Institute for Radiation Protection, Taiyuan 030006, Shanxi, China
| | - YiRen Lian
- Department
of Nuclear Emergency and Nuclear Safety, China Institute for Radiation Protection, Taiyuan 030006, Shanxi, China
| | - Yu Rong
- Department
of Nuclear Emergency and Nuclear Safety, China Institute for Radiation Protection, Taiyuan 030006, Shanxi, China
| | - Jin Yan
- Department
of Nuclear Emergency and Nuclear Safety, China Institute for Radiation Protection, Taiyuan 030006, Shanxi, China
| | - HongChao Sun
- Department
of Nuclear Emergency and Nuclear Safety, China Institute for Radiation Protection, Taiyuan 030006, Shanxi, China
| |
Collapse
|