“Urban underground, a resource, a system”infoscience.epfl.ch/record/167607/files/FINAL...
Transcript of “Urban underground, a resource, a system”infoscience.epfl.ch/record/167607/files/FINAL...
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“Urban underground, a resource, a system”
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OUTLINE
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General process of Planning for Territorial Engineering Project
Survey and understanding of the
challenges
Strategy and concept for decision-making
Operation and execution
time
SSSTC-Sino-Swiss Science and
Technology Cooperation Program
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-Conflict
+synergy
ENGINEERING FOCUS
DEEP CITY CONCEPT FOCUS
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Our mission:
To avoid the
same problem in
Switzerland and
other countries
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Space use
Infrastructures
Groundwater
exploitation
Thermal
energy
Material
reuse
Geo-environment
Social-economic context
Human
acceptance
Legal
feasibility
Economic
benefit
Political
feasibility
Urbanism
challenge
Surface-environment
Environmental impact
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Surface environment
Structures of junctions
Subsurface environment
resources (energy, water, material, space), external environment of the infrastructure
Underground space use, by Geo-engineering ---focus on internal environment of the infrastructureKind of needs:- Mass transit system- public utility system - Food storage & distribution system- Water storage- Energy storage- Car parking, shopping center, cultural activities- Shelters for natural disasters
Natural support
Explore & protect
protect
Economic development - Financial capacity- Capital return and increase- Increase market for the underground use- Economic assessment of underground facilities : life-cycle costs; indirect benefits offered by the underground alternative
Technological development- Civil engineering- Communication- Electricity- Transportation, logistics- Information system and 3D-data management
Technical support
(use the right data, choose the right location, applythe right construction methods)
Public acceptance- Security aspect- Architectural quality (visual design)- Psychological and health aspect
Financial support
need
Enhancement for economic activities
Urban development-Long-term Planning should include surface and subsurface land-use as normal parts- National Master planning, Town planning, a basic for decision-making- Authorities support the adaptation of laws and regulations- Risk management (financial, geological, construction, contractual, environmental, operational)
Environment and underground infrastructure
Innovation
benefit
benefit
benefit
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Legislation and laws
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Geneva urban zone
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3 zones selected for test
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3D geological and hydro-geological model of Geneva City
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Interaction geothermic groundwater
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geothermal probe of
150m depthGroundwater protection
Global Potential evaluation map for geostuctures:
•In Champel, low potential
•To the north-west of Champel , high potential.
A. Geostructure
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CEVA tunnel
across the river of Arve
and the aquifer Genevoise
Interaction space groundwater :
-barrier-effect and short-circuit
-reducing the groundwater flow
-contaminate the portable water
High waterLow water
B. Cross-river tunnel
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Global diagnostic based on the classification of Géotypes:
Space potential : bedrock in northern area is more appropriate for high-rise
building
Geomaterials recyclable: high potential to explore aggregate in construction
Groundwater use: drinking water in peripheral area and industrial use in
central area, conflict with the building foundations in the center
Geothermal energy: high potential for geostructures in northern area (black
circle)
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• Zone transformation: a outworn suburb industrial zone to a central modern zone
• First Master Plan : localize business in the center with high-rise buildings (white circles)
• Later engineering projects: integrate a multi-use resources management into planning
Main aquifer for drinking water
Shallow aquifer for industrial use
NORTHERN ZONE is more suitable for City redevelopment
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The proposition Deep City of integrating underground resources
management into Swiss Federal Law of Territory Planning has been
accepted and under consultation.
Early diagnostic has to be performed before the city planning, in order to
ensure the technical and environmental realism.
Challenge between underground use optimization and urban planning
nowadays.
TO CONCLUDE…
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International Partnership:
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Integrate a Deep City management system in China
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3D Urban
planning
Development guidelines by
regulatory authorities
Legal and administrative framework
Institutional arrangements / academic contribution
Project governance within an information platform: exhaustive geological & hydrogeological studies, environmental evaluation, social & psychological
investigation, economic evaluation and political factors
Underground space, + groundwater, geothermic, geomaterial, integrated potential evaluation system
(a critical reference for long-term planning)
Foundation pyramid for
urban underground
sustainable territory
management
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•Mechanism and mode of interactions between exploitation of different resources
under different conditions and scales.
•Global exploitation potential based on the spatial and temporal distribution for
long-term use and sustainable development.
•Coordination of the different structures based on the geo-environment system.
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