机掘工作面旋转屏蔽射流通风流场特性数值分析  

Numerical analysis of the rotating shield jet ventilation flow field characteristic of tunneling working face

作　　者：丘汉锋[1,2] 刘荣华[1,2] 王鹏飞[1,2] 王维建[1,2] 宋佳[1,2] 骆伟[1,2] 

机构地区：[1]湖南科技大学能源与安全工程学院,湖南湘潭411201 [2]湖南科技大学煤矿安全开采技术湖南省重点实验室,湖南湘潭411201

出　　处：《矿业工程研究》2012年第2期52-57,共6页Mineral Engineering Research

基　　金：国家自然科学基金资助项目(50974060);湖南科技大学研究生创新基金资助项目(S090103)

摘　　要：为了改善机掘工作面作业环境,满足生产安全的要求,根据现场实际情况,建立了掘进工作巷道风流流场数学模型,利用Fluent软件对旋转屏蔽射流通风流场特性进行了初步的数值模拟研究,从速度矢量和压力流场方面分析了不同喷射倾角和吹吸流量比对风流流场的影响,研究结果表明,当倾角α=75°,吹吸流量比在β=0.8～1.2范围内,该旋转风流流场控尘效果较好.研究结果能为煤矿掘进工作面通风参数的选择和优化提供理论依据,具有一定的理论研究价值和现场指导意义。In order to improve the environment of tunneling working face to meet the requirements of production safety, this paper establishes the mathematical model of flow field in tunneling working face according to the actual situation. The flow field characteristics of the rotating shield jet ventilation in working face are simulated by using Fluent software. It also analyzes the impact of different injection angles and ratios of blowing and suction on flow field from the velocity and pressure distribution. The results show that when the injection angle is a = 75°and the ratio of blowing and suction is among β = 0. 8 - 1.2 , the flow field＇ s dust - control effect is the better. The results provide the theoretic basis for parameter selection and optimization in coal heading face ventilation; it also has certain theoretical research value and on- site guidance significance.

关 键 词：旋转射流 通风流场 喷射倾角 吹吸流量比 数值模拟 

分 类 号：TD722[矿业工程—矿井通风与安全]