Mine ventilation design, Ive done all kinds of but as previous poster suggested, you need to be a bit more specific as to your requirements. Most HVAC engineers would be lost in trying to design for underground conditions, just like my experience would be irrelevant for design of building HVAC.
It depends where you are in the world.
A consultancy company we work with providing products controlling tunnel ventialtion fans used with smoke control applications are:
start with 100 CFm/lane per foot of tunnel for sizing purposes.
one way tunnel or bi-diretcional tunnel?
One way tunnels use jet fans using a push-type ventilation system. two-way, you need to supply and exhaust depending on shape and length of your tunnel, you may need refuge stations.
As there is no good specific design books on the topic, you will rely on an engineered ventilation system which must operate during normal (or sanitary mode removal of Co) and during smoke control.
The only way to convince authorities having jurisdiction is to perform a VFD modeling of the smoke removal system.
VFD control of fans from CO monitoring is the norm nowadays.
We've done a few of these tunnels, if in need of more info or help, drop me a line at info@thehtegroup.com
