摘要
根据智慧矿山发展需求,为降低煤矿井下掘进工作面工人粉尘接触量,提高粉尘集中治理效率,采用实验和模拟的方法分析风筒出风口不同角度对粉尘浓度分布的影响,以呼吸带、司机处粉尘浓度最低为第一原则,粉尘集中处理为次要原则选择风筒最优出风角度。研究表明,风筒出风口与迎头距离为5、7、9 m时,最优风筒出风口角度分别为上60°、左45°、左30°,粉尘浓度集中处理点分别为(10、2.5、2.8 m)、(2、2.5、3 m)、(4.5、2.5、3 m)。针对粉尘浓度集中点设计智能控风除尘系统,通过实时监测风筒与迎头距离,动态调整风筒出风口角度和喷头位置,达到定向集中喷雾降尘和降低工人粉尘接触量的目的,为建设智能化清洁矿井提供理论依据。
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.
作者
张平哲
齐艺裴
姜伯洋
李嘉
王福生
陈思锦
Zhang Pingzhe;Qi Yipei;Jiang Boyang;Li Jia;Wang Fusheng;Chen Sijin(College of Emergency Management and Safety Engineering,North China University of Technology,Tangshan 063210,China;Key Laboratory of Mining Development and Safety Technology of Hebei Province,Tangshan 063210,China)
出处
《煤炭与化工》
CAS
2024年第10期115-120,共6页
Coal and Chemical Industry
关键词
掘进工作面
粉尘分布
智能控风
定向喷雾
heading face
dust distribution
intelligent wind control
directional spray
