高压大流量风机在隧洞通风中的应用

Application of high-pressure and large-flow ventilator to tunneling ventilation

针对高压大流量风机在隧洞掘进中的通风问题,运用三维数值模拟,比较了隧道通风时风管管口与掌子面的距离、通风量对通风效果的影响。提出了一种可以自由伸缩的风管进行通风的方式,为吸出式通风单独在隧道掘进中的应用提供了一种途径。

For the problems from the high-pressure and large-flow ventilator adopted to tunneling ventilation, a 3 - D numerical simulation is applied to compare the impacts of the distance from the mouth of ventilating duct to the tunneling face and the venti- lating airflow volume on the ventilating effect; from which a ventilation mode equipped with a kind of free-telescopic duct head is put forward herein and then provides a way for only adopting the suction ventilation to the tunneling.