North European natural gas pipeline, Hittbergen- Achim section
Developer
E.ON Ruhrgas AG, Essen
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 PDF, 563 KByte
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Project
- Construction of a long-distance natural gas pipeline DN1.400 / DP100
- 187 km
- Continuous recording of water levels for evidential purposes
Our services
- Sinking of core drill holes
- Installation of 120 groundwater measuring points
- Equipping all measuring points with data loggers
- Continuous evaluation
- Sampling of measuring points and drainage processes as well as disposal points
- Analysis, sometimes by field laboratory
- Documentation
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NMS Nordmainische S-Bahn Rhein/Main, FfM-Ost station
Developer
Deutsche Bahn AG, Frankfurt
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PDF, 1101 KByte
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Project
- Construction of a 2-track urban railway from FfM Konstablerwache via FfM Fechenheim, Maintal to Hanau station over a total length of 19.535 km
- About 2.0 km of the route will go through two underground tunnels
- FfM-Ost station, 25 m below ground level, width 23 m, length approx. 240 m
Our services
- Hydrogeological expert report on the section and tunnel
- Analytical estimation of the groundwater build-up
- Creation of a numerical groundwater model for assessing the build-up and receding of groundwater caused by the tunnel and station
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Ulm railway station, groundwater monitoring
Developer
DB Netz AG, Karlsruhe
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PDF, 425 KByte
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Project
- Construction of a new vehicle maintenance, treatment and stabling facility
- Soil and groundwater contamination requiring remedial treatment was discovered in filled-up areas in the course of preliminary analyses.
- Soil remediation with hydraulic measures in the marshalling yard south of track section 4540 Ulm - main railway station - Sigmaringen
- Assessment of the hazard potential with regard to any residual contamination in the groundwater
Our services
- Groundwater monitoring to ascertain the success of the remediation and the hazard to the groundwater
- Measurement of groundwater levels
- Performance of 4 quarterly key date measurements and groundwater sampling
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Sewage sludge polder facility, Nordhorn-Frenswegen
Developer
Kommunale Betriebe Nordhorn AöR
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PDF, 214 KByte
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Project
- Kommunale Betriebe Nordhorn AöR, a municipal utilities organisation, operates a series of wells on the sewage sludge polder facility in Nordhorn-Frenswegen
- The series comprises a total of 39 sink pipes arranged in a line at an interval of at least 10 m and parallel to the Frensdorfer Bruchgraben watercourse
- The sink pipes have been designed as 10 m to 12 m deep gravity wells
- The series of wells serves to catch the groundwater of the upper unconfined groundwater level that is contaminated by the seepage from the sewage sludge polder
- According to the water permit issued by the Bentheim lower water authorities, the wells must be inspected every six months
Our services
- Preparation of a six-monthly report in accordance with the water permit application
- Inspection and precision adjustment of the series of wells on site
- Creation of an operating manual for the staff
- Functional inspection of all sink pipes and groundwater measuring points
- Zero-point measurement and measurement during operation
- Manual precision adjustment of all 39 sink pipes
- Interpolation of groundwater contour lines of the upper and lower groundwater level using the current measurements
- Analysis of the logger data of the control level
- Inspection of the switch boxes inc. adjustment of the disabling units
- Preparation of six-monthly inspection reports in accordance with the water permit application
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Landesnahverkehrsgesellschaft Niedersachsen mbH, LNVG,
Hanover
Developer
Heath railway, 3rd construction phase: Soltau - Buchholz
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PDF, 133 KByte
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Project
- The stretch of the heath railway between Soltau and Buchholz i.d.N. (km 87.967 to km 133.271), currently travelled at v = 80 km/h (approx. 45 km), is being upgraded to handle v = 120 km/h
Our services
- Geotechnical analyses of the current situation
- LAGA declaration of the existing ballast and analyses for BoVeK purposes
- Subsoil evaluation and geotechnical consulting pursuant to HOAI § 92
- Creation of 12 groundwater measuring points
- Performance of level measurements and evaluation of the measurement results
- Hydrogeological assessment for the purposes of safeguarding planning and realising the construction project
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Karstadt Leipzig,
new construction
Developer
Karstadt Immobilien AG & Co. KG, Essen
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PDF, 141 KByte
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Project
- ew construction of a shopping centre over 5 storeys with 3 underground car parking levels
- Foundation ditch approx. 12 m deep in the Leipzig city centre area
- Foundation in pierraille over brown coal stratum in groundwater, as combined pillar-spread foundation
- Underpinning of historic facades and neighbouring buildings, enclosing foundation ditch with subterraneous curtain 400 m long up to 30 m deep
- Subsequent undercutting of city tunnel using shield driving method
Our services
- Investigation of subsoil, advice on foundations
- Groundwater modelling
- Preliminary planning of enclosure for foundation ditch
- Application in relation to water laws
- Estimate of influence on lowered water level due to tunnel driving
- Advice on removal of 80 leader anchors in the subterraneous curtain run
- Assessment of the influence of hydraulic banking on neighbouring construction
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New construction of an S-Bahn tunnel in Leipzig city centre between Leipzig railway station
and the Bayerischer Bahnhof station
Developer
S-Bahn-Tunnel Leipzig GmbH, Leipzig
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PDF, 82 KByte
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Project
- Underground electrified track connection, length approx. 3.5 km, of which approx 2.6 km worked systematically
- Two single-track tunnel pipes, external diameter 8.8 m, spacing 0.5-1 diameter
- 4 underground stations
- Tunnel construction over practically the entire length below the groundwater table
- Groundwater communications units during the construction period and as permanent installations
Our services
- Groundwater monitoring
- Investigation of geohydraulic parameters
- Groundwater modelling to assess the effects of the construction measure on the geohydraulic conditions, multi-aquifer model of several quaternary and tertiary groundwater runs
- Planning recommendations to minimise influences on the groundwater regime
- Design and planning of groundwater communications units
- Application in relation to water laws
- Assessment of the influence of hydraulic banking on neighbouring construction
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New construction/Conversion
of the four-lane traffic node
on the Südring—Neefestr., Chemnitz
Developer
Ingenieurbüro Vössing GmbH
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PDF, 84 KByte
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Project
- Conversation/New construction as a partly level-free transport intersection with three levels of traffic
- Underpass up to approx. 8 m below the current site
- Subsoil comprising former water meadow and Rotliegendes tufa with uneven groundwater regimes
- Two spanned groundwater stockworks
- Construction measure crosses the direction of flow of the groundwater
Our services
- Investigation of subsoil, recommendation on foundations and examination for polluted areas
- Groundwater examination, calculation of construction water raising and estimate of impacts on the construction measure
- Devising and calibrating a groundwater model, testing the lowering of groundwater during the construction period and forecast of possible occurring banking following completion, hydrogeological instructions for dimensioning water raising and possible drainage requirements following completion
- Information on suitability for securing permission under the water law provisions
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Software for designing and dimensioning foundation ditches for drainage
Auftraggeber
Harbourdom AG, Köln
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PDF, 147 KByte
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Project
- Preliminary surveying of the radius for deployment
- HERTH/ARNDTS-based procedure
- Multi-well formula based on Forchheimer
- Time-referenced calculations using the multi-well formula
- Open water raising based on Davidenkoff
- Taking sheet piling into account
- Vacuum well
- Rectangular and variously-edged foundation ditches
- General foundation ditch outlines as polygons
- Complex foundation ditches with different base heights
- Multiple foundation ditches
Our services
- Preparation of calculation procedures for groundwater hydraulics using algorithms
- Implementing calculation procedures
- Devising the user interface, with graphic evaluation
- Software testing
- Documentation and handbook
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Hydrogeological investigations
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PDF, 78 KByte
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Own initiative
- Planning and carrying our hydrogeological charting, water recording, documentation of sources and their collection areas
- Planning and monitoring the establishment of groundwater metering points; carrying out hydrogeological field tests to determine aquifer key data (pump tests, tracers, percolation tests etc.)
- Hydraulic calculations, water balance sheets, calculating the influence of various subterranean construction measures on groundwater regimes
- Groundwater modelling, 2D and as 3D finite elements model
- Determining the influence of soil contaminations above and below the groundwater table on existing groundwater regimes Calculating and modelling transport of contaminants, site-dependent and time-dependent, forecast calculations
- Cost/benefit analysis of above measures with regard to economic construction
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Construction method to protect groundwater
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PDF, 76 KByte
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Own initiative
- The priority is the economic minimisation of interventions into the natural groundwater balance;
- Avoiding extensive lowering of groundwater levels due to water extraction measures; devising hydraulic and construction concepts to instate construction works protected by water-tight foundation ditches;
- Avoiding backing up due to construction works in aquifers, supplementary measures such as groundwater communications units;
- Preserving the natural flow of groundwater, supplementary measures such as groundwater communications units;
- Cost/benefit analysis of above measures with regard to economic construction
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Renewal of bridge in the
Riesa station rail section
Developer
DB ProjektBau GmbH, South-East branch, PZ Dresden
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PDF, 409 KByte
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Project
- Eliminating all same-level crossing points involved construction of a road underpass
- The pan construction works extend as far as the groundwater runs
- Water raising during the construction period of watertight enclosure of the foundation ditch
- Groundwater communications units during the construction period and as permanent installations
Our services
- Reports on subsoil and construction materials
- Advice regarding foundations
- Tendering for and monitoring of investigative works
- BoVek investigations
- Groundwater modelling to assess the effects of the construction measure on the geohydraulic conditions, multi-aquifer model
- Planning recommendations to minimise influences on the groundwater regime
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