矿井通风风量测量及误差补偿的仿真研究

doi:10.16265/j.cnki.issn1003-3033.2018.05.026

中国安全科学学报 ›› 2018, Vol. 28 ›› Issue (5): 153-158.doi: 10.16265/j.cnki.issn1003-3033.2018.05.026

矿井通风风量测量及误差补偿的仿真研究

李曼教授, 霍曼

西安科技大学机械工程学院,陕西西安 710054

收稿日期:2018-02-01 修回日期:2018-04-08 出版日期:2018-05-28
作者简介:李曼(1964—),女,陕西西安人,硕士,教授,主要从事煤矿设备智能检测与控制方面的研究。E-mail:liman10@sina.com。
基金资助:
陕西省重点研发计划项目(2018GY-039)。

Simulation study on mine ventilation air quantity measurement and error compensation

LI Man, HUO Man

School of Mechanical Engineering,Xi' an University of Science and Technology,Xi' an Shaanxi 710054,China

Received:2018-02-01 Revised:2018-04-08 Published:2018-05-28

摘要/Abstract

摘要： 为解决风速法测风量时因搭建支架使巷道内风流发生变化,造成较大测量误差,影响对矿井通风安全评价的准确性问题,以拱形巷道为例,首先用改进的切贝切夫横向型线方法确定测风点及传感器安装位置;然后,建立巷道仿真模型,通过仿真分析支架对风流分布的影响,得到测风断面处风速分布云图、测试线上的速度散点图及测风点风速值,并采用曲线拟合法由仿真数据得到风速误差补偿方程,以此修正风量测量值;最后,通过试验验证仿真分析结果和误差补偿方程。研究表明:搭建支架使各测点风速值增大,风量相对误差达到6.5%～6.8%,通过误差补偿后下降至0.5%～0.6%。

关键词: 拱形巷道, 测风点, 支架, 风速, 风流分布, 误差

Abstract: When measuring the air quantity by the wind speed method,due to construction of the support,the wind current in the roadway will be changed.It will result in a large measurement error and affect the accuracy of mine ventilation safety evaluation.In this paper,this problem is resolved.An arched roadway is taken as an example.First,the test points and the corresponding sensor installation positions were determined by using the improved Chebycheff method.Then,a roadway simulation model was built for analyzing the influence of the support on the wind flow distribution by simulation.The wind velocity contours,speed scatter plot on the test line and the wind speeds at the wind measurement points were obtained.A wind speed error compensation equation was obtained from the simulation data to correct the air quantity measurement values.Finally,the results of simulation analysis and error compensation equation were verified by experiments.The research shows that construction of the supports makes the wind speed of each test point increase,causes a relative error of air quantity of 6.5%-6.8%,and the error will be reduced to 0.5%-0.6% by the error compensation.

Key words: arched roadway, wind measurement point, support, wind speed, wind distribution, error

中图分类号:

X936

李曼, 霍曼. 矿井通风风量测量及误差补偿的仿真研究[J]. 中国安全科学学报, 2018, 28(5): 153-158.

LI Man, HUO Man. Simulation study on mine ventilation air quantity measurement and error compensation[J]. China Safety Science Journal, 2018, 28(5): 153-158.

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矿井通风风量测量及误差补偿的仿真研究

Simulation study on mine ventilation air quantity measurement and error compensation

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