综掘巷道大风量双压风筒下长压短抽除尘效果的模拟研究  

Simulation Study on Effect of Long Pressure and Short Pumping Dust Removal in High Wind Volume and Dual Pressure Air Ducts in Fully Mechanized Mining Roadway

作　　者：林钇含 李世航 郭乔松[1,2] 桂长庚 顾德毅 周京 LIN Yihan;LI Shihang;GUO Qiaosong;GUI Changgeng;GU Deyi;ZHOU Jing(School of Environment and Spatial Informatics,China University of Mining and Technology,Xuzhou 221116,China;Jiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization,China University of Mining and Technology,Xuzhou 221008,China;School of Safety Engineering,China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]中国矿业大学环境与测绘学院,江苏徐州221116 [2]中国矿业大学江苏省煤基温室气体减排与资源化利用重点实验室,江苏徐州221008 [3]中国矿业大学安全工程学院,江苏徐州221116

出　　处：《煤炭技术》2024年第3期173-178,共6页Coal Technology

基　　金：国家自然科学基金面上项目(52174215);江苏省自然科学基金青年项目(BK20200642);中央高校基本科研业务费项目-英才培育工程专项(2022YCPY0203)。

摘　　要：煤矿井下大风量双压风筒综掘巷道具有产尘强度大、粉尘分散度高、巷道风速大等特点,严重威胁作业人员身心健康和矿井安全生产。为降低大风量综掘巷道粉尘浓度,基于CFD数值模拟软件建立了双压风筒综掘巷道物理结构,采用DPM模型,重点研究了单抽双压式通风下抽风筒入风口与巷道迎头之间的距离对掘进工作面粉尘运移规律的影响,分析了大风量双压风筒下长压短抽通风方式对司机位置作业环境的影响。结果表明:保持双压风筒出口距巷道迎头为4、5 m,压入风量为1 200 m^(3)/min条件下,当抽风筒入口与巷道迎头之间的距离为8 m时,司机位置粉尘浓度为30~90 mg/m^(3),作业环境最佳。Combined excavation roadway with high wind volume and dual pressure air ducts in underground coal mine has the characteristics of large dust production intensity,high dust dispersion and high wind speed,which seriously threaten the physical and mental health of workers and the safety of mine production.In order to reduce the dust concentration of high wind volume combined excavation roadway,the physical structure of the dual pressure air ducts combined excavation roadway was established based on CFD Fluent numerical simulation software.The DPM model was used to study the influence of the distance between the air inlet of the exhaust fan and the head of the roadway on the dust migration law of the excavation working face under single pumping and dual pressure ventilation.The impact of the long pressure and short pumping ventilation method under high wind volume and dual pressure air ducts on the driver′s working environment was analyzed.The results showed that when the distance between the air inlet of the exhaust fan and the head of the roadway was 8 m,and the distance of the dual pressure air ducts outlet from the head of the roadway was maintained at 4 m or 5 m,and the input wind volume was 1200 m^(3)/min,the dust concentration range at the driver′s position was 30-90 mg/m^(3),which was the best working environment.

关 键 词：大风量双压风筒 长压短抽 数值模拟 司机位置 

分 类 号：TD714.4[矿业工程—矿井通风与安全]