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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