摘要
针对余吾煤业N1100工作面实行“高抽巷+Y型通风”治理瓦斯模式,应用流体力学模拟软件Comsol对不同进风量下以及高抽巷不同位置下Y型通风工作面采空区流场、瓦斯浓度场的分布进行了模拟研究,研究表明当进风量增大至2328 m^(3)/min时,工作面瓦斯浓度已经降低至安全作业浓度以下;模拟显示“高抽巷+Y型通风”联合采空区埋管对瓦斯治理效果较为明显,结合现场实际考察提出高抽巷最佳垂直位置为40~55 m.
Aiming at the implementation of the gas control mode of high extraction roadway+Y-shaped ventilation in the N1100 working face of Yuwu Coal Industry,the fluid dynamics simulation software Comsol was applied to simulate the distribution of the flow field and gas concentration field in the goaf of the Y-shaped ventilation working face under different inlet air volumes and different positions of the high extraction roadway.The study showed that when the inlet air volume increased to 2328 m^(3)/min,the gas concentration in the working face had already decreased to below the safe working concentration.The simulation showed that the combination of high extraction roadway+Yshaped ventilation and buried pipes in the goaf had a significant effect on gas control.Based on on-site investigation,the optimal vertical position of the high extraction roadway was proposed to be 40~55 m.
出处
《山西焦煤科技》
CAS
2023年第7期23-28,共6页
Shanxi Coking Coal Science & Technology
关键词
高抽巷
Y型通风
瓦斯浓度
采空区埋管
进风量
High extraction roadway
Y-shaped ventilation
Gas concentration
Buried pipes in goaf
Inlet air volume
