As a complement to the use of steel arches as the primary support, Onix offers Bernold Sheets to be used to prevent collapse and reinforce the ground. This type of sheet can also be used to avoid small detachments within the excavated section.
The Bernold sheet technique consists of placing steel or aluminum panels as lining inside tunnels. These panels are joined together by rubber joints to form a continuous structure that can withstand the pressure of the surrounding soil and ensure the stability of the tunnel.
The main advantage of the Bernold sheet technique is that it allows for the quick and economical construction of small and medium-sized tunnels. In addition, the use of steel or aluminum panels can reduce the size of the necessary excavation, which in turn reduces the cost and construction time.