摘要
针对巴拉素煤矿长距离掘进工作面通风周期长、影响工作面风流场因素复杂等问题,结合2201长距离掘进巷局部通风实际情况,采用Fluent软件模拟长距离局部通风风量衰减规律,建立了巴拉素煤矿长距离掘进通风供风量衰减数学模型;综合考虑不同供风量、不同风筒布设位置、不同出风口至巷道端头距离耦合因素影响下的掘进工作面风流场变化,采用相关性分析3种因素对风流场的影响程度,并给出了巴拉素煤矿长距离掘进通风调风的具体方案。模拟结果表明,不同风筒位置对风流场分布有显著影响,出风口风量和出风口至巷道端头距离与风流场紊乱程度呈正相关趋势,且风量的影响程度大于风筒位置,通风机供风量为500~750 m^(3)/min时可满足不同掘进长度的工作面供风要求,风筒出风量500 m^(3)/min最佳,出风口距巷道端头6~10 m较为适宜,风筒距巷道侧壁0.9 m较佳。该研究对于局部通风的高效调风与节能降耗具有重要的指导意义。
Aiming at the issues like the long ventilation period of the long distance driving face and the complex factors influencing the airflow field of the working face in Balasu Coal Mine,in combination with the local ventilation of the No.2201 long driving roadway,Fluent software was employed to simulate the attenuation law of the long distance local ventilation air volume.A mathematical model for the attenuation of ventilation air supply in long distance driving at Balasu Coal Mine was established.By comprehensively considering different air supply volumes,different positions of air duct installation,and the coupling effects of distances from the air outlet to the end of the roadway on the variation of airflow fields in driving faces,a correlation analysis was used to assess the impact of these three factors on the airflow field.The specific schemes for ventilation and air conditioning in the long distance of Balasu Coal Mine were proposed.Simulation results indicate that different positions of air ducts significantly affect the distribution of airflow fields.The simulation results show that different positions of the air duct have a significant impact on the distribution of the airflow field.The air volume at the outlet and the distance from the outlet to the end of the roadway are positively correlated with the degree of turbulence in the airflow field,and the influence of the air volume is greater than that of the air duct position.When the air supply volume of the fan is 500-750 m^(3)/min,it can meet the air supply requirements of different driving lengths of the working face.The optimal air volume for the air duct is 500 m^(3)/min,and the optimal distance from the air outlet to the end of the roadway is 6-10 m.A distance of 0.9 m from the air duct to the roadway sidewall is preferable.This study provides significant guidance for efficient ventilation adjustment and energy conservation in local ventilation systems.
作者
陈辰
王春刚
王文忠
闫振国
奚岱庸
王延胜
曹豫其
Chen Chen;Wang Chungang;Wang Wenzhong;Yan Zhenguo;Xi Daiyong;Wang Yansheng;Cao Yuqi(Shaanxi Yanchang Petroleum Balasu Coal Industry Co.,Ltd.,Yulin 719000,China;College of Safety Science and Engineering,Xi′an University of Science and Technology,Xi′an 710054,China)
出处
《能源与环保》
2025年第6期24-31,37,共9页
CHINA ENERGY AND ENVIRONMENTAL PROTECTION
基金
国家自然科学基金项目(52074214)
陕西省重点研发计划项目(2023-YBSF-190)。
关键词
长距离通风
供风量衰减
风流场分布
数值模拟
long distance ventilation
air supply volume attenuation
airflow field distribution
numerical simulation
