Tunnelling - Minova Global
Minova Tunneling Solutions
Minova strives to maximise safety today and sustainability for the future
Decades of experience
Minova combines decades of tunneling expertise with world class solutions for mechanical and chemical support. Our combined knowledge about challenges and solutions, makes us a complete partner to discuss construction of any tunneling project – from design phase to refurbishment or decommissioning.
Designing for a lifetime
Securing tunnels is a complex business, which not only needs quick solutions for today but the expertise and product application experience to be able to create lasting solutions. Our broad range of products allow tunnels to be both repaired and supported mechanically or chemically. Our anchoring bolts and grouts, water-stopping resins and flexible membranes and structural coating solutions extend tunnel life cycles so they can last a life time. Choosing the proper Minova support solution must take into account geological changes, impact from traffic loads, water levels and risk of leakage, and not the least – environmental impacts today and in the future. Allow one of our team to help you design the right solution for your project.
With presupport, we secure the ground for excavation of the tunnel. The rock is stabilized ahead of the face to reduce rock deformation before excavation. The pre support is executed from a secured area and completely eliminates work in unsecured areas. A proper pre-support also reduces the risk of collapsing roof or face during drilling and blasting.
- Face stabilisation
- Roof support
- Cavity filling
When excavated, the tunnel is further strengthened and secured for both continued work and for future operation. The rock reinforcement stabilizes the ground and extends the natural arch of the rock. The reinforcement prevents further loosening of rock mass and reduces rock deformation caused by further excavation.
- Rock consolidation through rock bolting
- Cavity filling to eliminate future ground movement
- Injection sealing to reduce influx
of water and to prevent ground movement in cracks.
To further stabilize the tunnel and to provide water control, the tunnel is sealed and prepared to be taken in operation. This is done with cement or resin based injection products and shotcretes and membranes.
- Injection sealing to close cracks
and fissures in lining.
- Safety neting to prevent loose
- Lining to create a smooth surface and redirect water ingress