Formwork for automatic widening of classic and conical type tunnels

This type of formwork is suitable for tunnels that have many sections, one different from the other. In this scenario, it is necessary to have a formwork that adapts to the various sections.

The movement of widening is done hydraulically to safeguard safety. In addition, the formwork is equipped with a system for lifting and positioning the formwork that must be added or removed to adapt the formwork to the various sections. This system is especially suitable for tunnels that have a conical geometry.

In the attached photo the conical formwork starts from a section of 8.8 meters wide and after several steps of enlargement it reaches a width of 20 meters. The formwork tapers by 1.2 meters in some sections between the starting section and the final section after 10 meters