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[1]刘剑,李雪冰,高科,等.井巷风速单点测试方法及其可行性研究[J].中国安全生产科学技术,2016,12(8):23-27.[doi:10.11731/j.issn.1673-193x.2016.08.004]
　LIU Jian,LI Xuebing,GAO Ke,et al.Study on single-point measurement method of roadway air velocity and its feasibility[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2016,12(8):23-27.[doi:10.11731/j.issn.1673-193x.2016.08.004]
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井巷风速单点测试方法及其可行性研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
12
期数:
2016年8期
页码:
23-27
栏目:
学术论著
出版日期:
2016-08-30

文章信息/Info

Title:
Study on single-point measurement method of roadway air velocity and its feasibility
作者:
刘剑1; 2; 李雪冰1; 2; 高科1; 2; 蒋清华1; 2; 尹昌盛1; 2
（1.辽宁工程技术大学 安全科学与工程学院，辽宁 阜新 123000； 2.矿山热动力灾害与防治教育部重点实验室，辽宁 阜新 123000）
Author(s):
LIU Jian1; 2;  LI Xuebing1; 2;  GAO Ke1; 2;  JIANG Qinghua1; 2;  YIN Changsheng1; 2
(1. College of Safety Science and Engineering, Liaoning Technical University, Fuxin Liaoning 123000, China; 2. Key Laboratory of Mine Thermodynamic Disasters and Control of Ministry of Education, Fuxin Liaoning 123000, China)
关键词:
矿井湍流; 单点测风; 传感器; 监测监控; 校正
Keywords:
mine turbulence;  single-point air measurement;  sensor;  monitoring and control;  correction
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2016.08.004
文献标志码:
A
摘要:
利用一点风速快速准确获得巷道平均风速是实现矿井通风智能监测监控的关键技术。针对该技术中的核心问题（断面平均风速u与该断面任意点风速u的关系），采用理论分析与实验验证相结合的方法进行了研究，提出了巷道平均风速单点测试方法；为确保该方法的可行性，研究过程考虑了风速大小、巷道形状、粗糙度、湍流发展程度等影响因素。理论研究表明，充分发展的圆管湍流中，u与u近似服从正比关系，且在很宽的风速范围内，比例系数k可视为定值。实验结果表明，非圆管、非充分发展湍流中，u与u仍满足近似正比关系，与理论分析结果相吻合；比值k与断面所处的流动环境及测点在断面内的位置有关；同一断面内任意两点的风速之比近似为定值；理论分析结论在巷道湍流环境中具有可行性。据此给出了单点测风方法的基本步骤及比例系数k的失效条件。
Abstract:
Using single-point air velocity to obtain the average air velocity of roadway rapidly and accurately is the key technology to achieve intelligent monitoring and control of mine ventilation. Aiming at the core issue (the relationship between sectional average velocity and any point velocity u in this section) of this technology, the method combined theoretical analysis with experiment validation was applied, and a single-point measurement method of roadway air velocity was put forward. To insure the feasibility of this method, the influence factors such as air velocity, roadway shape, roughness, turbulence development extent, and so on, were considered. The theoretical research showed that is approximately in direct proportion to u in fully developed turbulent pipe flow, and the proportional coefficient k can be considered as constant in an extensive range of air velocity. The experimental results showed that and u still meet approximate proportional relation in non-circular tube and no-fully-developed turbulent flow, which is consistent with theoretical results. The proportional coefficient k is associated with flow environment and location of measuring point in the section. The ratio of air velocity between any two points in the same section is a fixed value approximately. The conclusions from theoretical analysis are feasible in roadway turbulent flow environment. So the basic steps of single-point air measurement method and failure conditions of proportional coefficient k were presented.

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更新日期/Last Update: 2016-08-30