EARTHQUAKE RISK EVALUATION AND MANAGEMENT IN CHINA

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EARTHQUAKE RISK EVALUATION AND MANAGEMENT IN
CHINA Du Wei, Xu Zhizhong China Earthquake
Administration
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• CONTENTS
• Legal System
• Standards
• Operation Mechanism
• Research Fields and Institutes
• Previous Projects and Applications
• Ongoing Projects
• Special Difficulties

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Legal System by Law of Earthquake Disaster
Prevention and Mitigation -Provincial and local
governments Work out plans for earthquake
disaster mitigation based on earthquake risk
evaluation -Cities Draft out seismic
microzonation maps-Construction Projects
Planned and Designed with strong ground motion
parameters by Seismic Zonation Map or seismic
hazard analysis -China Earthquake Administration
(CEA) Propound the intensive areas of earthquake
monitoring and preparation based on seismicity
and earthquake risk evaluation Work out Seismic
Zonation Map Examine and approve sesmic
microzonation maps of cities and seismic hazard
analysis for major construction projects
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• Standards Concerned
• GB 18306-2001, Seismic ground motion parameter
  zonation map of China
• GB 17741-2005, Evaluation of seismic safety for
  engineering sites
• GB 21075-2007, Reservoir-induced earthquake
  hazard assessment
• DB/T 15-2005, Method for surveying and
  prospecting of active fault
• GB/T 17742-2008 , The Chinese seismic intensity
  scale
• GB/T 19428-2003, Code for earthquake disaster
  evaluation and its information management system

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• Operation Mechanism (1)
• Standards concerned drafted out by work groups
  (authorized and financially supported by CEA ),
  examined by CEA, approved by National
  Standardization Administration
• Seismic Zonation Map (EPA Tg, 10 proceeding
  probability in 50 years) drafted out by the
  Committee of Seismic Zonation (organized and
  financially supported by CEA), approved by
  National Standardization Administration as a
  standard
• Seismic microzonation of cities and seismic
  hazard analysis for construction project
  commissioned by the cities governments or the
  projects owners, work out by consultant
  institutions (certificated by CEA, about 70 all
  over the country), examined by the Committee of
  Earthquake Safety Assessment (organized by CEA),
  approved by CEA

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• Operation Mechanism (2)
• Intensive areas of earthquake monitoring and
  preparation based on earthquake risk evaluation
  of the whole country (potential damages and
  losses in 10-15 years) worked out by a work
  group (organized and financially supported by CEA
  )
• Earthquake risk evaluation of regions or cities
  (potential damages and losses in some years or
  caused by a defined scenario earthquake)
  commissioned by local governments, worked out by
  competent institutions

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• Research Fields and Institutes
• Active faults, potential earthquake sources
  Institute of Geology, CEA, etc.
• Seismicity, SHA, Zonation Institute of
  Geophysics, CEA, etc.
• Strong ground motion, Vulnerability of
  engineering structure in different scales
  Institute of Engineering Mechanism, CEA, etc.
• Information management based on GIS Institute of
  Earthquake Science, etc.

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• Previous Projects and Applications(1)
• Seismic Zonation Map of China (1990, 2000) from
  intensity to ground motion parameters,
  technological result combined with economic
  policy, directly used in structure design
• Intensive areas of earthquake monitoring and
  preparation based on risk evaluation (1996-2005,
  2006-2020) vulnerability model with statistic
  data ?distribution of potential damages and
  losses
• Pioneer cities and communities of earthquake risk
  evaluation and management (1996-2000) 7 cities
  and 2 communities ( e.g., Zigong in RADIUS
  project), used in the detailed plans on disaster
  mitigation

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• Previous Projects and Applications(2)
• Emergency damage estimation system (2003-2008)
  collect data as more as possible from 31
  provinces, package different scale data into an
  uniform GIS system, used in emergency response
  after an earthquake occurred
• Earthquake risk evaluation and management of
  cities in provincial level (2001-recent years)
  Guangdong, Fujian, etc., used in the detailed
  plans on disaster mitigation
• Surveying and prospecting of active fault in
  urban areas (2003-2008) 20 major cities, used in
  seismic hazard analysis and city planning

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• Ongoing Projects
• Seismic Zonation Map of China (2010) update
  tectonic and seismic data, approve technical
  methods and models
• Surveying and prospecting of major active faults
  (2009-2020) 3 major earthquake zones, more than
  170 active faults
• Engineering damages research of Wenchuan M8.0
  Earthquake and other major earthquakes approve
  vulnerability matrixes of different kinds of
  structures
• Earthquake Safety Services Platform (2009-2012)
  assemble and supply information of tectonic and
  seismic background, hazard analysis,
  vulnerability, risk evaluation, disaster
  prevention countermeasures in city, region and
  country level

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• Special Difficulties
• Uncertainty and randomness of hazard and
  vulnerability how can we estimate and adjust it
  reasonable and satisfactory?
• Huge amount of data how can we gather and update
  it efficiently?
• Application how can we engage our work to the
  stakeholders of public affairs more closely?

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THANK YOU!