new visualization of weida dam, germany: concept study general … · 2018. 7. 26. · 4 i....
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Visualization of Weida dam, Germany:
Concept study general renovation vs. dismantling of the
Weida dam
Simulation of usage scenarios of the Weida dam by merging geodata
September 2016
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I. Overview of Weida dam
II. Visualization aims
III. Usage scenarios
IV. Methodology:
I. Data
II. Technologies
Agenda
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I. Overview of Weida dam
Quelle:Google Maps
Weida dam
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I. Overview of Weida dam
• in operation since1956
• main dam wall & minor side wall for flood discharge
• reservoir volume: 9,6 Mio m³
• reservoir area: 92 ha, length 4,5 km
• maximum water level: 22,5 m
• height of the main dam wall: 32,5 m
• catchment area: 163 km²
• functions:
• drinking water (until 2012)
• flood protection
• low water elevation during droughts
• under monument protection
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I. Overview of Weida dam
background information: urgent restoration requirements of the dam and the facilities although the dam is
no longer needed.
What should happen with the dam?
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II. Visualization aims
• client: free state of Thüringen
Thüringen water supply company TFW (AöR)
• presentation of the possible secondary use concepts for general public
• visual presentation as a basis for further discussion
• mediation between the government and general public
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III. Usage scenarios
Development of 4 secondary use concepts
for the further usage of dam:
scenario 1: preservation of the dam – general restauration
scenario 2: preservation as a technical monument
scenario 3: part-dismantling of the dam wall
scenario 4: full dismantling
developement of a concept regarding
the data and technologies
the visualization in TerraGen (script)
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IV. Methodology
For the visualization different kinds of data and technologies have been used:
Data:
• elevation data: Digital Terrain (DTM) from LiDAR, UAV (drone), Bathymetry
• optical data: Airborne Orthophoto 50cm, UAV Orthophoto 20 cm and 2 cm
• 3D-models: CAD-Data
Technologies:
• remote sensing
• photogrammetry
• survey
• bathymetry
• 3D-modeling
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IV. Methodology: elevation data (DEM)
For the generation of a high resolution digital elevation model (DEM) elevation data from
• Airborne Laserscaning (LiDAR),
• bathymetric survey and
• photogrammetric analysis of UAV-imagery
has been used.
Specifications:
• LiDAR DTM: 2 m Raster (DGM2), accuracy: +/- 30 cm horizontal, +/- 15 cm vertical
• UAV DSM (digital surface model: 10 cm Raster)
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IV. Methodology: optical data: airborne orthophoto
An orthophoto is a geometrically undistorted image. This can be recorded by UAV, airplane
or satellite.
Specifications:
• 50 cm resolution
• RGB true color
• 8 bit colors
• geometrically corrected
the image will be used as a „wallpaper“
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IV. Methodology: optical data: UAV
By using a UAV (unmanned aerial vehicle) a flying campaign was carried out in the area of
the main dam wall and auxiliary dam
• Camera: Sony Alpha 6000, 19 mm wide angle lens
• Hexacopter
Processing of the photos for the generation of
• digital surface model, accuracy: 10 cm (LiDAR: 2 m!)
• orthophoto with 5 cm (!) resolution
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IV. Methodology: 3D-Models
Building structures as well as modified 3D-models were processed/modeled in AutoCAD and
SketchUp.
For the 3D-models data formats like
• *.dwg
• *.fbx
• *.obj
• *.skp (SketchUp)
were combined and processed.
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IV. Methodology: Technologies
• remote sensing
• photogrammetry
• survey
• bathymetry
• 3D-modeling
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Thank you for listening!
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