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Territory-wide Ground Investigation Databank
Innotech Forum on Geotechnology 30.5.2019
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Patty Cheng SGE/D2
LPM2 , GEO , CEDD
Content
1. AGS Data
2. Data Management
3. 3D Geological Modeling
4. Potential Applications
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.ags in HK since 1993 government let GI & LT contracts
- standard text format
- independent of softwares
- rules : ensure readable by different softwares
- tables : Group Heading Variable
source: AGS UK website
5source: AGS UK website
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source : AGS UK website
Archives in Civil Engineering Library (as of 2019Q1)
9000 Ground Investigation Reports with AGS files
8000 Laboratory Testing Reports with AGS files
200,000 GI stations (incl. boreholes, trial pits, coreholes, GCO probes etc.)
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Why I cannot import the AGS data in ArcGIS
nor Civil3D ?
Error Messages
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AGS data play a role in geotechnology
In-house Developed Program
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Converting archives to a consistent GIS/BIM compatible format AGS 3.1
AGS data management – HoleBase SI
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GEO Information Hub
Ginfo new version in May 2019
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New in Ginfo – AGS Display
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Distinct symbols for stations with AGS files
Instant AGS cross section
New in Ginfo – AGS Download
Download AGS 3.1 files
Fence the area of interest
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3D-Geological Modeling in BIM
• Geotechnical Module
• HoleBASE SI extension for Civil 3D
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Geology
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Weathering Grades
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SPT N-values
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• Create Project
• Import AGS Data
• 3D Geology
• Strata Surfaces
• Dynamic Cross Section
BIM Geological Modeling – Demo Video
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Leapfrog Model – Demo Video
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• Lidar
• Aerial Photo
• GI
• Surfaces
• Slicing Plane
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Geological Interpretation in Leapfrog
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Source : Leapfrog webpage
Modeling Intrusion in 3D and 2D
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Slicing Plane in Leapfrog
LPMitP Model - Demo Video
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• GI Data
• Aerial Photos
• Topo Data
• 3D Buildings
• Underground Structures
• LPMit Works
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source: Google Map
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Applications of digital AGS data
• Plan site-specific GI
• Create project BIM models
• Search sites for development, quarry, cavern
• Regional geological studies
+ geological maps, landslides, ENTLI, rainfall, AGMD etc.
• Many more ………….
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Thank You
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