煤矿井下拱形巷道低风速区风速分布的风洞模拟

Wind Tunnel Simulation on Wind Speed Distribution of Low Speed Zone in Coal Mine Arch Roadway

通过测量地下工程模拟风洞半圆拱形横断面8条特征线上的风速值,研究井下拱形巷道横断面上的风速分布规律。在不同断面中心点风速下边界层范围内,风流速度随传感器距巷道壁上各特征线端点距离变化关系的函数拟合基本符合对数函数形式。

The wind speed value of arch 8 line cross-sectional feature in wind tunnel simulation of underground engineering was measured in order to obtain wind speed of underground arch tunnel cross section distribution.In the range of the boundary layer with the wind speed at the center of the different section, the velocity of the wind velocity varies with the distance between the sensor and the end of the tunnel wall. The function fitting of the curve is basically in line with the form of the logarithmic function.