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A study was carried out between the South Tyrolean municipalities of Sesto and San Candido for the project planning of measures to reduce the risk of flooding in the municipalities. For this purpose, a routing variant of a drainage gallery was investigated.
Location: South Tyrol; Italy
Client: Autonomous Province of Bolzano South Tyrol, Agency for Civil Protection
Performance Period: 2020 – 2021
The geophysical measurements for the preliminary geological exploration included a combination of borehole measurements (up-hole and VSP) with surface measurements (2D multi-electrode geoelectrics and seismics (PreStack-Time Migration, 3D Tomographie)). The project was mainly challenging due to the prevailing weather conditions and the difficult to access alpine terrain and the associated logistical effort of the measurements. The main objective was to explore or determine the contact between the two predominant lithological units, Sesto Conglomerate and Quartz Phyllite.
The single-tube Karawanken motorway tunnel through the Alpine Karawanken mountain range is part of the European TEN-V corridor between Slovenia and Austria and is subject to an extensive expansion and modernisation programme. As part of this project, a second tunnel tube will be built and the existing tube will be rehabilitated. The Austrian section of the tunnel is 4.4 km long and excavation was started at the beginning of the project. The Austrian section of the tunnel is 4.4 km long and excavation started in 2018 and the construction lot limit was reached on 23 September 2021, while the remaining 3.6 km section of the tunnel is located in Slovenia and excavation started in August 2020. Breakthrough is scheduled for 2023. Both tubes and the cross-cuts to the existing tube are being advanced by blasting according to the NÖT.
Place: Carinthia, Austria and Slovenia
Owner/Client: ASFINAG (Austria); DARS (Slovenia)
Swietelsky Tunnelbau (Austria);
Geoportal, Geotocka (Slovenia)
Performance period: since 2018
On the Austrian side, Geodata has been commissioned with the complete construction and heading survey and the supply of the marking material for the 3D displacement measurements and the geotechnical instrumentation. For the Slovenian section, Geodata is supplying and installing the geotechnical instrumentation and operating the KRONOS tunnel information system.
Essentially, the construction project includes the diversion of several water courses from the upper Stubaital and central Ötztal with a gallery length of 25.5 km, the construction of the Kühtai reservoir in the upper Längental with a usable volume of approx. 31 million m³ and a 113 m high natural stone fill dam with a central earth core seal, and the construction of an underground pumped storage power plant “Kühtai 2 power plant” between the new Kühtai reservoir and the existing Finstertal reservoir. The additional annual production will be 216 million kWh.
Location: Kühtai, Tyrol; Austria
Client: TIWAG (Tiroler Wasserkraft AG)
Commissioned by: JV SWK Kühtai (Swietelsky – Jäger – Bodner)
Performance period: since 2021
Together with a JV partner company, we are responsible for carrying out the entire construction and heading survey for the construction of the tunnels, caverns and the fill dam, the geotechnical measurements and the supply of instrumentation for the underground structures.
S 18 Bodensee Highway is an important connection between Austria and Switzerland in the Rhine Valley area. The designing phase of the project has to face several difficulties, where one of the major restrictions is the European nature conservation law due to the NATURA 2000 protected area in the area. Based on the feasibility study in the frame of the project “Mobil in Rheintal” two alignment alternatives are to be investigated in detail:
Location: Vorarlberg; Austria
Performance Period: 2018 – 2019
We provide geophysical measurements that are incorporated into the overall geological investigation of the project. The sediments in the Rhine Valley, which have been pressed through the Ice Age, are investigated using two different geophysical methods. Up to a depth of 100 meters, seismic and geoelectic measurements can be used to draw conclusions about the given geology. The results of our geophysical measurements are compared with the existing drill cores and help to gain a better understanding of the regional geology.
The S 7 Fürstenfelder Schnellstraße (expressway) will in future run from the Riegersdorf junction (A 2) via Fürstenfeld to the Hungarian state border at Heiligenkreuz. The approximately 3 km long construction lot 8 with 2 separate directional lanes consists of an approximately 1 km long open cut construction method, an 1.8 km long Rudersdorf mining tunnel and an 0.3 km long groundwater basin. The tunnel tubes are partially located in the groundwater. The two mined tubes are driven exclusively in soft ground. The geology is mainly composed of clays, silt, sands and gravel. Due to the difficult geological and hydrogeological conditions, the tunnelling work will be carried out in partial excavations.
Place: Styria, Burgenland; Austria
Performance period: since 2018
On behalf of the client, Geodata (in a JV) is responsible for the geotechnical measurements with 3D displacement measurements, tunnel scanner measurements and control surveying. A separate order was placed for sound level measurements.
The Geophysical Department was commissioned with a detailed areal estimation of the soil parameters (elastic modulus dyn and shear modulus dyn) by means of seismic measurements in the area of the fill or landfill surface. The result was delivered as a 3D distribution of the dynamic parameters.
The Heinzel Group is building a second large paper machine for the production of bleached kraft paper at the Zellstoff Pöls AG site in Austria. So-called MG papers are used for flexible packaging and show superior market growth. With the new machine, a total of 200,000 tons of MG papers can be produced annually at the Pöls site.
With a diameter of 7.3 meters and a total weight of around 200 tons, the drying cylinder is the largest welded high-precision drying cylinder in the world.
Location: Styria, Austria
Commissioned by: Zellstoff Pöls AG
Performance period: 2018 – 2019
The rolls of a paper machine require a high-precision alignment, especially for parallelism. In order to meet these requirements, a high-precision network for SMR adapters over an area of 130 m x 25 m and a total height of approx. 20 m was created before the beginning of the assembly work. This network serves as the basis for all stakeout, setup and control surveying activities throughout the entire construction period. This procedure made it possible to precisely align the steel structure in advance, which made the alignment and assembly of the rollers much easier and saved a significant amount of time.
Another challenge was the installation of the Yankee cylinder. The lower half was levelled exactly in front of the hall to facilitate assembly of the upper half. After assembling the two halves, the entire Yankee cylinder was exactly aligned by using the prepared axle markings and removed.
The Berchtesgaden salt mine, which has been in operation since 1517, currently extracts approx. 900,000 cubic metres of brine per year in 30 mud-flash drilling plants. The size of the deposit currently being mined, with a salt content of approx. 50% in the rock, is 2.5 km x 1.5 km. Directly connected to the active mining there is a show mine.
Location: Bavaria; Germany
Client: Südwestdeutsche Salzwerke AG
Performance Period: since 2018
For the geotechnical rock monitoring of individual mud-flush drilling plants, which have an extension of up to 160 m x 120 m and a height of up to 125 m, numerous multiple rod extensometers with up to 60 m individual rod length were supplied and installed. The installation was carried out in the ridge and bed from existing tunnels.
In an old water gallery in the area of the “Old Salina” in Reichenhall a Georobot system for automatic deformation measurement in the area of influence of bored piles was installed for the new construction of a hotel.
The settlement area of the Upper Styrian town of Pürgg is directly threatened by a rockfall. An extensive monitoring programme was executed to monitor the rock face both during the construction of a protective dam and afterwards.
Location: Styria; Austria
Client: Federal Ministry for Sustainability and Tourism – Torrent and Avalanche Control
Performance Period: since 2018
We are essentially commissioned with the following services:
Planning, delivery and installation, commissioning, operation during the construction work for the protective dam, development of an alarm system and transfer into a continuous monitoring system after the construction work has been completed.
Rough assessment of the threat scenarios and flights in the area with a drone by means of a drone.
Daily evaluation and analysis during the construction work and risk assessment for the release of the construction work
Geotechnical and accompanying geological assessment of the project and construction supervision of the dam construction work.
The approximately 6 km long tunnel chain runs as part of the Koralm railway between the Lavant and Jauntal valleys. It consists of the tunnel Deutsch-Grutschen (2.6 km), the enclosure Granitztal (0.6 km) and the tunnel Langer Berg (2.9 km). It is designed as a twin-tube tunnel system with cross-cuts every 500 m. In the Granitz Valley area, the railway line will be constructed using the cut-and-cover method, whereby the Granitzbach stream will be bridged using a special construction method. A ventilation structure and a rescue access is also located in this area. In the final stage, the tunnel tubes will be backfilled.
Place: Carinthia; Austria
Client: ÖBB Infrastruktur
Performance period: since 2015
We were commissioned by ÖBB Infra to carry out the geotechnical measurements and the control surveys. The scope of services includes the delivery of the geotechnical instrumentation and the execution of the measurements, including optical 3D displacement measurements. The scope of services also included the installation and operation of an online track monitoring system with automatic alarm in case of exceeding of alarm limits at Eis-Ruden station. The total length of the track system was 220 m with 4 tracks.
The dual carriageway tunnels are located 19 km south of Port Said city and are an important part of the Suez Canal Region Development Plan, which will connect the Sinai with other Egyptian provinces to provide a gateway for investment opportunities and speed up the development of Sinai province. The tunnels will comprise twin tube 3.8 km tunnels with a further 800 m of cut and cover tunnel at each side of the Suez Channel. Tunnel boring was carried out using two slurry shield
TBMs with 13.05 m excavated diameter. The clear space between the tunnels is 30 m at the start of tunnelling, reducing to 17.4 m with increasing cover and improved ground conditions. The tunnels have a maximum overburden of 47 m, with a minimum clearance of 18 m below the seabed. Both launching shafts were constructed as five intersecting circular shafts with 25 m diameter.
Place: Port Said; Egypt
Client: Arab Contractors – ORASCOM / W&F
Performance period: 2015 – 2020
We supplied all the geotechnical instrumentation for the project and organised and trained the local measurement team for installation, measurement execution and evaluation on site. The measurement program mainly included inclinometers, piezometers and levelling at the surface, 3D displacement measurements in the shafts, the C&C and TBM tunnels. Strain gauges were used in the segments and on the support elements of the open cut tunnels. Our software solutions EUPALINOS and KRONOS were used to evaluate and visualize the measurement results.
The 27.3 km long two tube railway tunnel is an essential part of the Baltic-Adriatic Axis (TEN corridor) in Austria and connects Lower Austria with Styria. After commissioning in 2026, the journey time from Vienna to Graz will be shortened by 30 minutes. The tunnel construction work is essentially divided into 3 areas:
Place: Lower Austria/Styria; Austria
Client: ÖBB Infrastruktur
Performance period: since 2014
We were commissioned by ÖBB Infra to carry out the geotechnical measurements and the control surveys. The extensive scope of services includes the supply of geotechnical instrumentation and data acquisition, the measurement execution including optical 3D displacement measurements and gyro measurements. In addition, geophysical measurements are carried out underground to investigate and evaluate karst-prone mountain sections.
The 33 km long railway tunnel is the centerpiece of the new high-performance line between Graz and Klagenfurt. It consists of two single-track tunnels with cross passages at 500 m intervals. The maximum overburden is 1200 m. An emergency stop is planned in the middle of the tunnel. The center distance of the two tunnel tubes is about 40 m, in the area of the emergency stop about 50 m.
Work on the approx. 10 km long exploration tunnels and shafts began in 2004. Work on the main tunnel has been in progress since 2009. The tunneling is carried out in cyclical tunnelling and for the most part with a total of 3 tunnel boring machines. Release for traffic is planned for 2026.
Location: Styria/Carinthia; Austria
Client: ÖBB Infrastruktur
Commissioned by: ÖBB Infrastructure (exploration tunnel Leibenfeld & Mitterpichling; ventilation structure Paierdorf; KAT 1)/
STRABAG/Jäger Bau (KAT 2)/Porr AG (KAT 3)
Performance period: since 2014
Since the beginning of the project in 2004, we have been working on all contract sections, either on the part of the client or the companies carrying out the construction. Our entire range of services is used for tunnel construction, ranging from network and control surveying by means of gyroscopes to carrying out geotechnical measurements and instrumentation with data acquisition and processing up to tunneling control and supply of control systems for the TBMs.
For the 531 MW power plant project, a total of 74 kilometers of tunnel, several shafts and 2 caverns with an excavation volume of just over 40,000 cubic meters each will be excavated. A total of 6 tunnel boring machines will be used to excavate 40 km, while the remaining tunnel will be excavated by blasting. The construction site extends from 820 m to 2,500 m above sea level.
Location: 50 km southeast of Santiago; Chile
Client: Alto Maipo SpA
Commissioned by: STRABAG Chile
Performance period: since 2014
Together with the Chilean subsidiary Geodata Andina, we are responsible for the entire construction and excavation surveying. The scope of services also includes optical 3D displacement measurements as well as network and control surveying.
The tunnel is the centerpiece of the railway axis Verona -Munich and consists of two single-track tubes that run at a distance of 40-70 m and are connected with cross passages at intervals of 333 m. The tunnel is located in the middle of the railway axis Verona -Munich. In addition, a continuous exploratory tunnel will be constructed in the middle between the two main tunnel tubes. The BBT will have a total length of 64 km, making it the longest underground railway link in the world. In Innsbruck, the BBT will lead into the existing railway bypass. The new two-tube tunnel that is going to be built between Innsbruck and Franzensfeste will be 55 km long.
Location: Tyrol; Austria
Commissioned by: Swietelsky (contract section Wolf 1 and 2)/Porr-Hinteregger-Condotte-Itinera (contract section Pfons – Brenner)
Performance period: 2013 – 2017 (Wolf) and 2018 (H51)
The VERBUND power plant Ybbs-Persenbeug was Austria’s first power plant on the Danube and is located in Lower Austria. The interior of the power plant has been undergoing modernization since 2014. One machine set (turbine and generator) is renewed each year, and all six vertical machine sets are to be replaced by 2022. This will significantly increase the power generation of the power plant. The resulting additional generation corresponds to the annual electricity consumption of 22,000 households.
The 460 m long dam wall holds back the Danube over a length of about 34 km and up to a height of 10.9 m. The dam will be built on the banks of the Danube. The volume of the reservoir is approx. 74 million m³, the targeted water level is 226.2 m above sea level.
The two locks are located at the left, northern end of the dam, each with a usable length of 230 m and a usable width of 24 m.
The weir consists of 5 weir fields with a width of 30 m each and is located in the middle of the dam wall.
Location: Lower Austria; Austria
Client: VERBUND Hydro Power GmbH/Andritz AG
Performance period: 2013 -2018
The power plant has 7 machine units, six of which are vertically installed Kaplan turbines and one Kaplan bulb turbine. The measurement was carried out on machine sets 4, 5 and 6. The aim of the survey was a target-performance comparison of the guide vane positions in the guide vane as well as a geometry determination. The contour of the impeller casing was also determined by a target/actual comparison.
In addition, the measurement was carried out at the lower head of the sluice system before dismantling the mortise gate drives as a basis for realignment in the course of assembly with the new back suspension beams.
The full extension of the 8.3 km long Gleinalm tunnel comprises the construction of the second tube and the general renewal of the existing tube. The new tunnel tube was excavated by blasting and opened to traffic in June 2017. Afterwards the general refurbishment of the existing tunnel tube, which is almost 40 years old, will take place.
Location: Styria; Austria
Commissioned by: ASFINAG / Swietelsky Tunnel Construction (renovation of existing pipe)
Performance period: 2013 – 2018
We were commissioned by ASFINAG to carry out the geotechnical measurements and the control measurements. The range of services includes basic and network measurements, inventory and control surveys, 3D displacement measurements including delivery of the targets and the marking material, tunnel scanner surveys and vibration measurements for the new and existing tubes.
Construction surveying is taking place for the renovation of the almost 40-year-old tube.
The Cityringen project creates a new ring line in the city center and consists of two 17.4 km long tunnels and 17 new train stations (two of which are transfer stations), all 30 m underground. From a technical viewpoint, the project is extremely complex because the city is at sea level. Tunnelling will be carried out by TBM. For the connection to the operation and maintenance center, tunnels will be constructed using the open construction method.
The extension consists of two TBM tunnels with a length of 1.8 km and 1.6 km, a rescue and ventilation shaft as well as an underground and an above-ground station.
The two 4.4 km long tunnel tubes will be driven with two EPB shield machines. Along the route, 5 new underground station structures will be erected.
Location: Copenhagen; Denmark
Client: Metroselskabet I/S
Client: Copenhagen Metro Team I/S (Cityringen)/MetNord JV (Cityringen – Branch off to Nordhavnen)/Metroselskabet I/S (Extension to Sydhavnen)
Performance period: since 2011
Our Danish JV company SMT Denmark ApS was commissioned to carry out the entire geotechnical monitoring for the Cityringen project and the Nordhavnen extension. The scope of services includes the supply and installation of the geotechnical installation equipment with data acquisition and measurement, levelling and 3D displacement measurements (mainly with automatic total stations) as well as sound and vibration measurements. Particularly noteworthy is the implementation of our tunnel information system KRONOS, which handles the entire data management, processing and visualization, alarming and reporting of several thousand sensors.
The successful use of KRONOS is the reason why Geodata was directly commissioned by the client to operate the tunnel information system for the Südhavnen extension.
voestalpine is one of the world’s leading technology and industrial goods groups with combined materials and processing expertise that focuses on product and system solutions made of steel and other metals in technology-intensive industries and niche areas with the highest quality standards.
Location: Styria and Upper Austria; Austria
Client: voestalpine Stahl Donawitz GmbH/voestalpine Stahl GmbH Linz/voestalpine Schienen GmbH/voestalpine Wire Rod Austria GmbH/voestalpine Tubulars GmbH & Co KG/voestalpine Böhler Bleche GmbH & Co KG
Performance period: since 2004
In the voestalpine Group we carry out surveying services with a wide variety of measuring systems (industrial tachymat, laser tracker, laser scanner, drones, etc.). Over the years, we have carried out surveying work (inventories, staking out, control measurements, crane runway surveys, setting up roller tables, etc.) for earthworks, concrete construction, steel construction and mechanical engineering in the appropriate accuracy classes. Furthermore, major projects such as the revamping of the CC2 continuous casting plant, the new construction of the PCI plant, the rail rolling mill, the wire rolling line, the CC4 continuous casting plant and several blast furnace linings were accompanied by surveying technology.