We support to lead your tunnel project to success

DMT one-stop tunnel surveying services – with expertise from more than 3800 successful gyro campaigns.

Complete orientation of mines - DMT Group — We are qualified to deal with complex tasks such as a complete orientation of mines with a connection to the surface surveying grid.

DMT's surveying engineers are on the move worldwide - DMT Group — DMT's surveying engineers are on the move worldwide for special surveying tasks in tunnels e.g. Eurotunnel, Brenner Base Tunnel and Gotthard Base Tunnel.

Based on the GYROMAT series, DMT offers one-stop tunnel orientation services with a word-class surveying team and expertise from more than 3800 successful gyro campaigns. We have been active in underground mining and tunnels project around the world e.g. Eurotunnel, Brenner Base Tunnel, Gotthard Base Tunnel and major metro line and infrastructure project tunnels.

Our clients benefit from our many years of experience in surveying service and confident hand in developing our own surveying instruments. Our highly qualified team is ready to assist you in solving and executing even the most complicated surveying tasks, including:

Determination of base geodetic networks
High-precision terrestrial surveying
GNSS measurements
Control measurements
Highest accuracy directional measurements
Breakthrough measurements
Accuracy forecasts for the selection of measuring equipment
Consulting, design and development of concepts for complex measurement tasks

Special-Purpose Surveying in Tunnelling and Pipe Driving

Our services in the field of tunnel construction and pipe driving cover 3D grid surveys, independent control measurements with our high-precision gyroscopes DMT Gyromat 3000/5000 and geodetic adjustment using recognized network adjustment programs. Having more than 50 Leica GNSS/GPS geo-systems and 10 gyro-measuring systems at our disposal, we are always able to deliver the most modern equipment suitable for your needs, and guarantee the high quality of measuring expected by regularly maintaining and carefully calibrating the devices.

We are also qualified to deal with complex tasks and procedures in the area of special-purpose underground surveying. For example, we calculate the complete reorientation of mines with a connection to the surface surveying grid by means of high-precision transfer of coordinates, measurements and orientation from the base grid through mine shafts of up to any depth.

Safety is Key for Surveying & Laser Scanning

The safety factor plays a major role within our range of services. Thus DMT's portfolio also boasts specialist measuring devices for use in hazardous areas, which meet the highest security requirements according to ATEX. For the measurement and monitoring of offshore platforms and chemical plants, where the risk of explosion is equally high, we offer a system of intrinsically safe GNSS receivers and antennas, again ensuring that ultra-high-precision monitoring of motion is performed in compliance with all safety regulations.

Moreover we offer an explosion proof ZF laser scanner for 3D laser scanning of underground mines and cavities deemed critical with regard to safety.

Check survey at Thames Tideway Central Tunnel

With a length of 12.5 km the Thames Tideway Central Tunnel is the largest section of a 25 km sewer that runs largely under the River Thames in London. Following the course of the river results in a challenging alignment from a surveying point of view.

Check survey in the Emscher sewer system

The ecological reconstruction of the Emscher system consists of the construction of a central wastewater treatment system in the Ruhr area with a length of 51 kilometers of sewers.

Check survey in the Rohtang Pass Highway Tunnel Project

The Rohtang Tunnel is a road tunnel in the northern Indian state of Himachal Pradesh in the Himalayan outliers and is considered the longest tunnel (9,02 km) at an altitude of over 3,000 meters.