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当一条穿脉入风道以一定角度与沿脉巷道交叉时,由于风流动压具有方向性,在顺着风流方向的一侧,造成一个附加的通风压力,并在此通风压力作用下,改变原来风流分配状况,使顺着风流方向的一侧,风量增大,而另一侧风量减少。如图1,当主要入风道与沿脉巷道以θ角交叉连接时,风流在断面Ⅰ处开始分离,向两翼自然分配,两翼分配风量的多少,除与巷道风阻有关外,还受风流方向的影响。对巷道风流动压的通风作用,可做如下分
When a pulse is inserted into the air duct and crosses along the roadway with a certain angle, an additional ventilation pressure is created on one side of the air flow direction due to the dynamic pressure of the wind flow and is changed by this ventilation pressure The original distribution of romantic, so that along the side of the direction of the wind, the air volume increases, while the other side of the air volume decreased. As shown in Figure 1, when the main air inlet and the vein along the roadway to the intersection of θ angle, the wind flow in the section I began to separate, natural distribution to the two wings, the two wings to allocate the amount of air flow, in addition to roadway resistance, but also by the wind direction Impact. Ventilation effect on the pressure of ventilation Roadway can do the following points