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井下局部地段的风量调节,尤其是采区内工作面之间的风量调节,主要是在阻力较小的地方加设调节风窗以提高该巷道的阻力来实现的。鉴于现调节风窗面积的计算公式误差较大,我们提出调节风窗面积的精确计算公式,并绘制成图,便于使用。一、现用风窗计算公式的分析如图1所示,风流通过风窗所造成的损失应包括风流通过风窗突然收缩的局部阻力损失及突然扩大的冲击损失两部分。但是现
The air volume adjustment in some underground sections, especially the air volume adjustment between the working face in the mining area, is mainly achieved by adding a regulating window to increase the resistance of the roadway where the resistance is small. In view of the large error of the formula for adjusting the window area, we propose an accurate formula for adjusting the window area and draw a graph for ease of use. First, the analysis of the existing window calculation formula shown in Figure 1, the loss caused by the wind through the windshield should include the sudden loss of wind through the windshield contraction of the local resistance loss and the sudden expansion of the impact loss of two parts. But now