摘要
为了确定与巷道断面内平均风速相适应的风速传感器的安设位置,以保证巷道风量监测的准确性,利用Fluent软件在不同巷道类型、不同断面尺寸、不同风速的条件下,对24个矿井巷道模型的风流场进行了三维数值模拟,确定了巷道断面中轴线上与平均风速相等的点位,并得到了该点位置与巷道断面的关系,其中矩形巷道该点位置至顶板距离为巷道高度的11%～12%,半圆拱形巷道该点位置至顶板距离为巷道高度的15%～16%;同时,给出了平均风速位置查询表格和计算公式,并与实测结果比较,发现风速数据基本吻合,为矿井利用风速传感器准确监测巷道风量提供了有力保障。
In order to confirm installation location of air velocity sensor adaptive to average air velocity in section of mine roadway and to ensure the accuracy of air volume monitored and measured in the mine roadway, Fluent software was applied to the three dimensional nu- merical simulation on the air flow fields of 24 mine roadway models under different mine roadway type, different section size and different air velocity condition. The point location where average air velocity was equal to the central axial fine in the section of the mine roadway was established and the relationship between the point location and the mine roadway section was summarized. The distance to roof from the point location of the mine rectangle roadway would be 11% - 12% of the mine roadway height and the distance to the roof from the point location of half arch roadway was 15% - 16% of the mine roadway height. Meanwhile, a search table and calculation formula of the average air velocity was provided and in comparison with site measured results, the air velocity data could be fitted basically and could provide powerful protection to the air velocity sensor applied to accurately monitor and measure the air flow volume of the mine roadway.
出处
《煤炭科学技术》
CAS
北大核心
2015年第8期92-96,共5页
Coal Science and Technology
基金
"十二五"国家科技支撑计划资助项目(2012BAB13B02)
关键词
通风监测
风速监测
通风数值模拟
风速传感器
平均风速
mine ventilation monitoring and measuring
air velocity monitoring and measuring
numerical simulation of mine ventilation
air velocity sensor
average air velocity
