基于相似理论的掘进巷道流场结构分析

doi:10.16265/j.cnki.issn1003-3033.2018.08.024

中国安全科学学报 ›› 2018, Vol. 28 ›› Issue (8): 142-148.doi: 10.16265/j.cnki.issn1003-3033.2018.08.024

基于相似理论的掘进巷道流场结构分析

姜婉^1,2, 魏建平^1,2,3 教授, 徐向宇^1,2

1 河南理工大学瓦斯地质与瓦斯治理国家重点实验室培育基地,河南焦作 454000;
2 河南理工大学安全科学与工程学院,河南焦作 454000;
3 煤炭安全生产河南省协同创新中心,河南焦作 454000

收稿日期:2018-05-09 修回日期:2018-06-26 出版日期:2018-08-28 发布日期:2020-11-25
作者简介:姜婉(1993—),女,河南镇平人,硕士研究生,主要研究方向为工业安全技术。E-mail:981817723@qq.com。
基金资助:
河南理工大学青年基金资助(Q2017-1);教育部创新团队发展计划(IRT_16R22);河南省基础与前沿技术研究计划项目(142300413233)。

Analysis of structure of flow field in tunneling road based on similarity theory

JIANG Wan^1,2, WEI Jianping^1,2, XU Xiangyu^1,2

1 State Key Laboratory Cultivation Base for Gas Geology and Gas Control,Henan Polytechnic University,Jiaozuo Henan 454000,China;
2 School of Safety Science and Engineering,Henan Polytechnic University,Jiaozuo Henan 454000,China;
3 Collaborative Innovation Center of Coal Work Safety,Jiaozuo Henan 454000,China

Received:2018-05-09 Revised:2018-06-26 Online:2018-08-28 Published:2020-11-25

摘要/Abstract

摘要： 为探究掘进巷道内的粉尘运移规律,依据相似理论,自主搭建掘进巷道相似试验平台,开展风速分布试验,并通过软件fluent模拟研究掘进巷道风流场的分区特征和回流区变化特征。结果表明:风流场特征表现为掘进工作面附近风速波动明显,后方风速分布均匀;数值模拟分析进一步得出,回流区占巷道横截面的比例随着横截面与工作面距离的增加而增大,且存在3个增长停滞段,它们分别与工作面附近的2处涡流和巷道后方区域相对应;大断面巷道与相似模型的平均风速满足相似比,且试验数据与模拟结果基本吻合,验证了模拟的有效性。

关键词: 压入式通风, 相似准则, 数值模拟, 流场结构, 回流区

Abstract: In order to explore the law of dust migration in driving roadway,this paper was aimed at studying the structure of flow field in tunneling roadway with forced ventilation.Based on the similar theory,a similar experimental platform for tunneling roadway was built,and air velocity distribution experiments were carried out by using the platform.The fluent simulation method was used to study the flow field partition feature and the variation characteristics of the backflow.The results show that the flow field is characterized by obvious wind speed fluctuation near the headway of the roadway,and uniform distribution of the wind speed at the rear,that the percentage of the reflow area gradually increases along the roadway,and there are three growth stagnation segments corresponding to two vortices near the headway and rear of roadway,and that the average air velocity in the roadway with large section and that in the similar model conform to the similarity ratio,and the experimental data are in good agreement with the simulated data,which shows the effectiveness of the simulation.

Key words: forced ventilation, similarity criterion, numerical simulation, structure of flow field, reflow area

中图分类号:

X936

姜婉, 魏建平, 徐向宇. 基于相似理论的掘进巷道流场结构分析[J]. 中国安全科学学报, 2018, 28(8): 142-148.

JIANG Wan, WEI Jianping, XU Xiangyu. Analysis of structure of flow field in tunneling road based on similarity theory[J]. China Safety Science Journal, 2018, 28(8): 142-148.

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基于相似理论的掘进巷道流场结构分析

Analysis of structure of flow field in tunneling road based on similarity theory

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