矿井局部通风不同参数对工作面瓦斯浓度的影响分析  

Analysis of the Infl uence of Different Parameters of Local Ventilation in Mine Shaft on Gas Concentration in Working Face

作　　者：李博 LI Bo(Jinneng Holding Coal Industry Group Tashan Coal Mine,Datong 037003,Shanxi,China)

机构地区：[1]晋能控股煤业集团塔山煤矿,山西大同037003

出　　处：《凿岩机械气动工具》2025年第2期76-78,共3页Rock Drilling Machinery & Pneumatic Tools

摘　　要：为深入探究送风风速和风筒直径对瓦斯排出的影响,采用Fluent有限差分仿真方法进行分析,通过构建工作面瓦斯气体浓度分析模型,对不同条件下的通风效果进行模拟。结果显示,送风速度和风筒直径的变化对射流贴附效应具有重要影响,送风速度越快,风筒直径越大,瓦斯气体的贴附效应越好,有助于有效降低工作面空间的瓦斯浓度。基于上述分析,确定了合理的送风系统参数,送风速度为8 m/s,风筒直径为600 mm。这一参数组合能够显著提高通风效果,有效降低瓦斯气体浓度,从而提高煤矿工作面开采的安全性。In order to deeply explore the influence of air supply velocity and air duct diameter on gas discharge,Fluent finite difference simulation method is used for analysis.By building the analysis model of gas concentration in working face,the ventilation effect under different conditions is simulated.The results show that the changes in air supply velocity and air duct diameter have an important influence on the jet attachment effect.The faster the air supply velocity and the larger the air duct diameter,the better the attachment effect of the gas,which is helpful to effectively reduce the gas concentration in the working face space.Based on the above analysis,the reasonable parameters of the air supply system are determined,with the air supply velocity of 8 m/s and the air duct diameter of 600 mm.This parameter combination can signifi cantly improve the ventilation effect and effectively reduce the gas concentration,thus improving the safety of mining in the working face of the coal mine.

关 键 词：矿井通风 瓦斯分布 送风速度 风筒直径 仿真分析 

分 类 号：TD712[矿业工程—矿井通风与安全]