ATHENS METRO

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ATHENS METRO

• Geomechanical Monitoring System

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Metro Project

• 5 extensions to existing metro
• 27.4 km of tunnels
• 23 stations
• 2 depots

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Extension
Extension
Extension
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Background

• One of Europes first urban rail grids, 1869
• Athens population is about 4 million
• Car numbers around 2 million
• Current metro system carries 400,000/day
• Completed system to carry 750,000/day
• Completion date 2005

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FUNDING

• 2.2 Billion Euros
• 50 EU subsidies
• 40 EIB Loans
• 10 Greek State

Project Manager is Bechtel International (8.6
dedicated to management)
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Tender for Monitoring System

• Techbase International (Denver)
• Ian R Brown Associates (Wellington)
• GeoConsult (Athens)

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AGS
The Association of Geotechnical and
Geoenvironmental Specialists (AGS) is a
non-profit making trade association established
to improve the profile and quality of
geotechnical and geoenvironmental engineering.
The membership comprises UK organisations and
individuals having a common interest in the
business of site investigation, geotechnics,
geoenvironmental engineering, engineering
geology, geochemistry, hydrogeology, and other
related disciplines. (www.ags.org.uk)
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Geomechanical Data Management System

• Data collection
• Data processing
• Validation
• Reporting
• Graphical Output

All data were required to conform to AGS
standards DB design, file exchange formats etc
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Contractors (x5)
Athens Metro
Site Input
Central DB (ODBC)
AM Management /Contractors
Validate
Local Data
Checks
Queries
Reports
Reports/Graphs
Batch AGS
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Types of Instrumentation

• Levelling points
• 3D survey targets
• Extensometers
• Inclinometers
• Load cells
• Piezometers

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TECHBASE Main Options
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Data Administration
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Reporting Options
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Graphical Options
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TIME SERIES
Up to 6 levelling sites
Drilling progress
Location map
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TIME SERIES
3D survey sites
Movement in X, Y Z
Location map
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CONTOUR PLOTS
Piezometric data
filled contours - can be set for alarm and
trigger levels
Location map
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LOCATION MAP
Can select instrument types as required
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Challenges

• Several contractors with different data input
  formats for different instruments
• Greek fonts
• Changes to data input formats
• Changes to data outputs
• Obtaining all base information about
  instrumentation