VENTILATION SYSTEMS FOR MICROTUNNELING AND UNDERGROUND NETWORKS
Ventilation systems
SUB’ROCA has designed a compact range of high-performance fans in diameters from 250mm to 800mm to ventilate microtunneling excavations and underground networks such as electrical networks, hydraulic networks or sewers.
Various configurations
We are able to design fans ranging from single stage (1 stage) to multi-stage (up to 4 stages) adapted to the constraints and phasing of your site based on the following characteristics:
- Casing made of S235JR steel with galvanised or epoxy paint finish.
- The motors supplied have, depending on the case, a supply voltage of 230/400V or 400/690V (230V single phase/1000V or other on request).
- Our fans are equipped with support feet as standard, but can be optionally mounted on fixed or mobile chassis (wheels, sledge/skid, etc.) for ease of movement.
- The propellers are made of blades whose material varies according to the application propylene, glass-fibre reinforced propylene, aluminium, antistatic plastic. Thanks to our high quality materials and our design software, we can provide you with the propeller best suited to your constraints. Being at the forefront of propeller technology is part of our commitment.
Choice of equipment levels
Ventilation ducts and networks
Spiral ducts
Flexible spiral ducts, more commonly known as « Spiragaines » are ducts that allow a fluid, in this case air, to circulate, which may be loaded with pollutants, dust or gas. They can be used for either blowing or suction (in overpressure or underpressure) and can be connected by different technologies (belts, straps, zip,…).
They are originally produced with 550g/m2 PVC, but can be produced with PVCs from 300 to 1000g/m2 on request and are packaged in sections of 5, 10, 15 or 20 metres.
Types of duct connections
Belt link
Zip link
Strap link
Velcro link
Accelerators for unclogging
Due to the geometry of the galleries and mesh networks, it can be difficult or even impossible to guide the air to specific locations. It may be possible to favour the air path with Jetfan or also called accelerator.
SUB’ROCA has been able to make use of its know-how from the Charbonnages de France to design Jetfans mounted on fixed or mobile frames that can be easily moved to adapt the air path.
