CFD simulations of air curtain dust removal effect by ventilation parameters during tunneling |
| |
| Affiliation: | 1. State Key Laboratory of Mining Disaster Prevention and Control Co-found by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China;2. College of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao 266590, Shandong Province, China;3. College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, Shandong Province, China |
| |
| Abstract: | During coal mining, the fully-mechanized tunnel is always under high-concentration of dust pollution. This brings not only the potential risk of dust explosion but also makes the tunnel workers suffer from coal mine pneumoconiosis (CWP), a systemic disease featured by pulmonary fibrosis. Therefore, it is extremely important to establish a theory and optimal parameters for dust control over fully-mechanized excavating tunnels. In this study, we analyzed the dust diffusion under several parameters, including the distance between the forced air opening and the cutting face (LY), the height of the forced air cylinder above the floor (LH), and the distance between the center of the forced air cylinder and the nearest coal wall (LJ). The optimal dust control parameters were determined as: LY = 20 m, LH = 3 m and LJ = 0.6 m. Under this condition, the airflow can effectively suppress the diffusion of dust particles. At the same time, the operating environment of the roadheader driver was remarkably improved and the requirements on miners’ occupational health and safe production were satisfied. The present study proposed a new approach for occupational health of the workers in the excavating tunnel and clean production management. |
| |
| Keywords: | CFD simulation Occupational health Tunneling Air curtain dust control Field measurement |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
