Analysis of Typical Example and Genesis of Landslide Triggered by Wenchuan Earthquake in China

Abstract:

As the main geohazard triggered by Wenchuan earthquake, landslide is widely distributed. It caused many people lost their lives and incipient fault. This paper analyzes the genesis of these landslides from the aspects of geomorphy, geological structure of slope body, rock characters, earthquake motion, stable condition of slope, weathering effect and stream action. Strong earthquake motion near the fracture zone and geological structure of slope body are the main reasons caused the slope failure. Take Wangjiayan landslide as the typical example, the genesis of earthquake-induced landslide is analyzed. Strong earthquake motion near the fracture zone and the extroversion structural surfaces are the main reasons caused the slide, and great slope and instable state of slope can also promote the slop failure. Failure process of slope is also analyzed.

• Periodical: Applied Mechanics and Materials (Volume 238)
• Pages: 886-889
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.238.886
• Online since: November 2012
• Authors: Jin Yu Dong, Zi Li Li, Zhi Quan Huang, Ji Hong Yang, Guo Xiang Yang
• Keywords: Failure Process, Geological Structure of Slope, Slope, Strong Earthquake Motion, Structural Surface

References

[1] Z. Yang, R. Zhao, J. Wang, Earthquake-induced geological hazards in west of Anxian county and consideration of engineering geomechanical problems, Chinese Journal of Rock Mechanics and Engineering, 9 (2008) 1807~1813.

[2] R. Huang, W. Li, Fault effect analysis of geo-hazard triggered by Wenchuan earthquake, Chinese Journal of Rock Mechanics and Engineering, 12 (2008) 2585~2592.

[3] Y. Mao, G. Hu, X. Mao, Mechanism of set-out violent-slide of slope mass during earthquake and its simulation by using discrete element method, Journal of Engineering Geology, 1 (2001) 74~80.

[4] X. Wang, G. Nie, Characteristics of landslides induced by Wenchuan MS 8. 0 Earthquake and preliminary analysis of their relations with ground motion parameters, Chinese Journal of Geotechnical Engineering, 9 (2009) 1378~1383.

[5] Y. Yin, Rapid and long run-out features of landslides triggered by the Wenchuan earthquake, Journal of Engineering Geology, 2 (2009) 153~166.

[6] G. Wang, J. Zhang, H. Liu, Investigation and preliminary analysis of geologic disasters in Beichuan county induced by Wenchuan Earthquake, The Chinese Journal of Geological Hazard and Control, 3 (2009) 47~51.