Minova is the leading manufacturer and supplier of chemical-based consumables, steel strata support systems, associated equipment and services for rock bolting and ground consolidation. The business provides both proprietary and custom-engineered applications based on more than 135 years experience of industry specialization.
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.
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.
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.