《川煤科技》1974年2期11～14页刊登“矿井自然通风对机械通风的影响”.现利用通风网路图解法的理论,对自然风压造成入风或排风井巷的风流反问问题作如下探讨.1.图1风网中通过风路3的风量与通过主扇B的风量相等.首先在半函数坐标系中以O点为原点,绘出风阻曲线3及风机特性曲线B(曲线B是在半函数坐标系中描绘的,与等分坐标系的风机特性曲线不同).风机 “Sichuan coal science and technology” in 1974 two issue 11 ~ 14 published “mine natural ventilation on the mechanical ventilation.” Now the use of ventilation network diagram theory, the natural wind pressure into the wind or exhaust windway Lane rhetorical questions The problem is discussed as follows.1.Figure 1 The amount of air passing through the air duct 3 in the wind network is equal to the amount of air passing through the main fan B. First, in the semi-function coordinate system, point 0 is taken as the origin to draw the wind resistance curve 3 and the fan characteristic curve B (Curve B is plotted in a semi-function coordinate system and differs from the fan characteristic curve in an equally divided coordinate system.) Fan