Tunnel construction places high demands on measurement. When the work is done underground, there are not the same opportunities for clear visibility and satellite positioning as above ground, while small deviations can have major consequences later in the project.
Mätkonsult offers qualified measurement for tunnel, rock and infrastructure projects and can follow the work from establishment and setting out to ongoing control and final documentation.
Correct location throughout the tunnel
In a tunnel project, the project's coordinates and heights need to be taken from the ground surface and further down into the work area. The measurement system must then be maintained and checked during the course of the project.
Our surveying technicians can help with, among other things:
establishment and control of the main network
transfer of coordinates and heights to the tunnel
staking out tunnel geometry
staking out centerlines, profiles and heights
control of direction and position
measurement of rock and tunnel profile
control of excavated and finished surfaces
measurement before and after various production steps
quantity and volume calculations
relation measurement and documentation
creation of digital data for design and production
The service can be adapted from single measurement efforts to ongoing measurement support throughout production.
Why is measurement so important?
Small errors can become large later on
A minor deviation in direction or height can develop into a significant error over longer distances. Regular checks ensure that any deviations can be detected early.
Production receives the right information at the right place
Staking out gives the contractor a clear basis for, for example, rock work, construction, installations and other production steps.
Control during the work
Through recurring measurements, actual execution can be compared with the projected geometry while the work is still in progress.
Better documentation
What is being built and excavated can be documented metrologically and passed on to the project's digital documentation and relational documents.
The same reference throughout the project
A stable and well-controlled measurement system creates a common geometric basis for the various actors in the project.
In a tunnel, it is not enough to measure correctly once - precision must be maintained throughout the entire project.
Mätkonsult combines experience from construction and infrastructure measurement with modern measurement technology and digital workflows. We can work closely with production and help with everything from the backbone network and layout to control, measurement and finished documentation.
This means that the customer receives more than just a few measurements. Mätkonsult can be the metrological link between design and actual execution and help ensure that the correct geometry is followed throughout the entire project.