独头巷道脉动式通风试验研究

LABORATORY TEST STUDY ON THE HEADING FACE PULSATING VENTILATION

以抽出式通风为前提,在实验室进行模拟试验,提出了一种新的给风方式即脉动式给风,旨在通过使用脉动式给风,打破持续给风造成的风流能量平衡,从而加大涡流区的扰动,同时利用烟雾浓度扩散,使烟雾向外运动至风筒的有效吸程中,以提高风筒的作用距离和通风效率,此外,与传统的恒定给风相比,脉动式给风在节能方面也有一定的优势。

In this paper,using the method of exhaust ventilation , a simulation test in laboratory is carried out, and a new way of ventilation, that is pulsating ventilation, proposed. In this way, the energy balance that caused by continuing ventilation can be broken, leading to the increase in eddy disturbance. While leveraging the concen- tration diffusion of smoke which moves outwards, it can increase the ventilation distance and efficiency. Compared with the continuing ventilation, pulsating ventilation has also advantages in energy saving.