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| Research on intelligent air control and dust removal system in heading face |
| Zhang Pingzhe1, 2, Qi Yipei1, 2, Jiang Boyang1, 2, Li Jia1, 2, Wang Fusheng1, 2, Chen Sijin1, 2 |
| 1. College of Emergency Management and Safety Engineering, North China University of Technology, Tangshan 063210, China; 2. Key Laboratory of Mining Development and Safety Technology of Hebei Province, Tangshan 063210, China |
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Abstract According to the development needs of smart mines, in order to reduce the dust exposure of workers in the tunneling face of coal mines and improve the efficiency of dust concentration control, the influence of different angles of the air outlet of the air duct on the distribution of dust concentration was analyzed by experiments and simulations. The minimum dust concentration at the breathing zone and the driver is the first principle, and the dust concentration treatment is the secondary principle to select the optimal air outlet angle of the air duct. The results show that when the distance between the outlet of the air duct and the head is 5 m, 7 m and 9 m, the optimal outlet angles of the air duct are 60°, 45°and 30°respectively, and the centralized treatment points of dust concentration are ( 10 m, 2.5 m and 2.8 m ), ( 2 m, 2.5 m and 3 m ), ( 4.5 m, 2.5 m and 3 m ) respectively. An intelligent air control and dust removal system is designed for the dust concentration point. The angle of the air outlet and the position of the nozzle are dynamically adjusted by real-time monitoring of the distance between the air duct and the head, so as to achieve the purpose of directional centralized spray dust reduction and reduce the dust exposure of workers, and provide a theoretical basis for the construction of intelligent clean mines.
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