特长输水隧道通风方案确定

Determination of Ventilation Scheme of Extra-long Water-conveyance Tunnel

输水隧道不同于公路隧道,隧道需风量与通风方式的选择,需根据输水隧道的特点进行确定。通过对采用斜井轴流风机+隧道内射流风机的通风方式和供水隧道内采用全射流风机的通风方式,两种方案进行比选,确定了利用已有的一座施工斜井兼做通风斜井的方案,达到了通风效果更优、总体投资更低、更有利于防灾救援的目的。

Different from highway tunnels,the selections of required airflow and ventilation methods in water-conveyance tunnels are based on the characteristics of the tunnel.This paper compared two ventilation schemes of the inclined shaft axial fan+in-tunnel jet fan and the full jet fan inside the water-supply tunnel and determined that using an under-construction inclined shaft as the ventilation inclined shaft,to reach the goals of optimal ventilation effect,lower overall investment,and more conducive to disaster prevention and rescue.