Collapsible survey mast

The Geocon team has developed a collapsible survey mast that can be used in immersion sites with limited overhead space. This watertight aluminium structure floats to the surface when a tunnel segment is immersed. The Geocon team determined the angle of the prism reflector on the survey mast during tests on the site parking lot. During the immersion operation, these data were used to determine the segment’s position.

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Innovaties 001