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2008 Hans Cloos lecture. Seismic geo-hazard assessment of engineering sites in China

  • Sijing Wang
Original Paper

Abstract

Based on the fault-block concept, the paper proposes a scheme for the seismic geo-hazard assessment of engineering sites. A general geo-hazard intensity is determined by comparing the basic intensity of the block where the engineering structure is to be located and the influencing intensity associated with the potential epicenter of a strong earthquake in the boundary fault zone. The obtained general intensity is then modified to take into account the local ground conditions and pre-existing geo-hazard level (particularly landslides) to obtain the comprehensive intensity, which is the basis for the seismic geo-hazard level assessment and site planning recommendations. Four dam sites associated with major hydropower stations are discussed, as well as the 100 m high Zipingpo dam which is located close to the epicenter of the Wenchuan earthquake. The results show that a dam designed on an intensity close to that proposed in the paper would be able to resist potential destructive earthquakes without significant distress.

Keywords

Seismicity Fault-block concept Seismic geo-hazard level Comprehensive intensity Seismic geo-hazard assessment 

Notes

Acknowledgments

The author is grateful to Marcel Anould, Neik Regers and Faquan Wu for helpful advice and support. Sincere thanks are also due to Haitao Qian, Genyou Han and Ying Liu for their kind help in preparing the manuscript.

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Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  1. 1.Institute of Geology and GeophysicsChinese Academy of SciencesBeijingChina

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