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Landslides

, Volume 9, Issue 1, pp 131–142 | Cite as

The characteristics and failure mechanism of the largest landslide triggered by the Wenchuan earthquake, May 12, 2008, China

  • Runqiu Huang
  • Xiangjun Pei
  • Xuanmei Fan
  • Weifeng Zhang
  • Shigui Li
  • Biliang Li
Recent Landslides

Abstract

Strong earthquakes are among the prime triggering factors of landslides. The 2008 Wenchuan earthquake (M w = 7.9) triggered tens of thousands of landslides. Among them, the Daguangbao landslide is the largest one, which covered an area of 7.8 km2 with a maximum width of 2.2 km and an estimated volume of 7.5 × 108 m3. The landslide is located on the hanging wall of the seismogenic fault, the Yingxiu–Beichuan fault in Anxian town, Sichuan Province. The sliding mass travelled about 4.5 km and blocked the Huangdongzi valley, forming a landslide dam nearly 600 m high. Compared to other coseismic landslides in the study area, the Daguangbao landslide attained phenomenal kinetic energy, intense cracking, and deformation, exposing a 1-km long head scarp in the rear of the landslide. Based on the field investigation, we conclude that the occurrence of the landslide is controlled mainly by the seismic, terrain, and geological factors. The special location of the landslide and the possible topographic amplification of ground motions due to the terrain features governed the landslide failure. The effects of earthquakes on the stability of slopes were considered in two aspects: First, the ground shaking may reduce the frictional strength of the substrate by shattering of rock mass. Second, the seismic acceleration may result in short-lived and episodic changes of the normal (tensile) and shear stresses in the hillshopes during earthquakes. According to the failure mechanism, the dynamic process of the landslide might contain four stages: (a) the cracking of rock mass in the rear of the slope mainly due to the tensile stress generated by the ground shaking; (b) the shattering of the substrate due to the ground shaking, which reduced the frictional strength of the substrate; (c) the shearing failure of the toe of the landslide due to the large shear stress caused by the landslide gravity; and (d) the deposition stage.

Keywords

Wenchuan earthquake Daguangbao landslide Geomorphologic feature Failure mechanism Dynamic process 

Notes

Acknowledgements

This research was financially supported by the National Basic Research Program “973” Project of the Ministry of Science and Technology of the People’s Republic of China (2008CB425801). The authors acknowledge Prof. Niek Rengers for his suggestions. We thank the Japan Aerospace Exploration Agency (JAXA) for providing the data for this research.

References

  1. Alford D, Cunha SF, Ives JD (2000) Lake Sarez, Pamir Mountains, Tajikistan: mountain hazards and development assistance. Mt Res Dev 20:20–23CrossRefGoogle Scholar
  2. Brune JN (2001) Shattered rock and precarious rock evidence for strong asymmetry in ground motions during thrust faulting. Bull Seismol Soc Am 91:441–447CrossRefGoogle Scholar
  3. Chen G, Ji F, Zhou R, Xu J, Zhou B, Li X, Ye Y (2007) Primary research of activity segmentation of Longmen Shan fault zone since Late-Quaternary. Seismol Geol 29(3):657–673 (in Chinese with English abstract)Google Scholar
  4. Chigira M, Xu XY, Inokuchi T, Wang GH (2010) Landslides induced by the 2008 Wenchuan earthquake, Sichuan, China. Geomorphology 118(3–4):225–238CrossRefGoogle Scholar
  5. Dai FC, Xu C, Yao X, Xu L, Tu XB, Gong QM (2011) Spatial distribution of landslides triggered by the 2008 Ms 8.0 Wenchuan earthquake, China. J Asian Earth Sci 40:883–895. doi: 10.1016/j.jseaes.2010.04.010 CrossRefGoogle Scholar
  6. Densmore AL, Ellis MA, Li Y, Zhou R, Hancock GS, Richardson N (2007) Active tectonics of the Beichuan and Pengguan fault at the eastern margin of the Tibetan Plateau. Tectonics 26:TC4005. doi: 10.1029/2006TC001987 CrossRefGoogle Scholar
  7. Gasiev E (1984) Study of the Usoy landslide in Pamir. Proceedings of IVth International Symposium on Landslides, 16–21 September, Toronto, pp 511–515Google Scholar
  8. Geli L, Bard PY, Jullien B (1988) The effects of topography on earthquake ground motion. A review and new results. Bull Seismol Soc Am 78(1):42–63Google Scholar
  9. Gorum T, Fan XM, van Westen CJ, Huang RQ, Xu Q, Tang C, Wang GH (2011) Distribution Pattern of Earthquake-induced Landslides Triggered by the 12 May 2008 Wenchuan Earthquake. Geomorphology. doi: 10.1016/j.geomorph.2010.12.028
  10. Hao KX, Si H, Fujiwara H, Ozawa T (2009) Coseismic surface-ruptures and crustal deformations of the 2008 Wenchuan earthquake Mw 7.9, China, Geophysical Research Letters, 36. doi: 10.1029/2009GL037971
  11. Hewitt K (1998) Catastrophic landslides and their effects on the Upper Indus streams, Karakoram Himalaya, northern Pakistan. Geomorphology 26:47–80CrossRefGoogle Scholar
  12. Huang RQ, Li W (2009) Development and distribution of geohazards triggered by 5.12 Wenchuan earthquake in China. Sci China Ser E-Tech Sci 52(4):810–819CrossRefGoogle Scholar
  13. Huang RQ, Pei XJ, Li TB (2008) Basic characteristics and formation mechanism of the largest scale landslide at Daguangbao occurred during the Wenchuan earthquake. J Eng Geol 16(6):730–741 (In Chinese with English abstract)Google Scholar
  14. Jibson RW, Harp EL, Michael JA (2000) A method for producing digital probabilistic seismic landslide hazard maps. Eng Geol 58:271–289CrossRefGoogle Scholar
  15. Korup O (2002) Recent research on landslide dams—a literature review with special attention to New Zealand. Progr Phys Geogrs 26:206–235CrossRefGoogle Scholar
  16. Li Y, Allen PA, Densmore AL, Xu Q (2003) Evolution of the Longmen Shan Foreland Basin (western Sichuan, China) during the Late Triassic Indosinian Orogeny. Basin Res 15:117–138CrossRefGoogle Scholar
  17. Li XJ, Zhou ZH, Yu HY, Wen RZ, Lu DW, Huang M, Zhou YN, Cu JW (2008) Strong motion observations and recordings from the great Wenchuan Earthquake. Earthq Eng Eng Vibrat 7:235–246CrossRefGoogle Scholar
  18. Liou YA, Kar SK, Chang L (2010) Use of high-resolution FORMOSAT-2 satellite images for post-earthquake disaster assessment: a study following the 12 May 2008 Wenchuan Earthquake. Int J Rem Sens 31(13):3355–3368CrossRefGoogle Scholar
  19. Meunier P, Hovius N, Haines JA (2008) Topographic site effects and the location of earthquake induced landslides. Earth Planet Sci Lett 275:221–232CrossRefGoogle Scholar
  20. Newmark NM (1965) Effects of earthquakes on dams and embankments. Geotechnique 15:139–160CrossRefGoogle Scholar
  21. Sato HP, Harp EL (2009) Interpretation of earthquake-induced landslides triggered by the 12 May 2008, M7.9 Wenchuan earthquake in the Beichuan area, Sichuan Province, China using satellite imagery and Google Earth. Landslides 6:153–159CrossRefGoogle Scholar
  22. Sepúlveda SA, Murphy W, Jibson RW, Petley DN (2005) Seismically induced rock slope failures resulting from topographic amplification of strong ground motions: the case of Pacoima Canyon, California. Eng Geol 80:336–348CrossRefGoogle Scholar
  23. Shen Z, Sun J, Zhang P, Wan Y, Wang M, Bürgmann R, Zeng Y, Gan W, Liao H, Wang Q (2009) Slip maxima at fault junctions and rupturing of barriers during the 2008 Wenchuan earthquake. Nat Geosci 2:718–724. doi: 10.1028/NGEO636 CrossRefGoogle Scholar
  24. US Geological Survey (2008) Magnitude 7.9—Eastern Sichuan, China, 2008 May 12 06:28:01UTC. Available at http://earthquake.usgs.gov/earthquakes/eqinthenews/2008/us2008ryan/
  25. Weidinger JT (1998) Case history and hazard analysis of two lake-damming landslides in the Himalayas. J Asian Earth Sci 16:323–331CrossRefGoogle Scholar
  26. Xu X, Wen X, Yu G, Chen G, Klinger Y, Hubbard J, Shaw J (2009a) Coseismic reverse- and oblique-slip surface faulting generated by the 2008 Mw 7.9 Wenchuan earthquake, China. Gology 37:515–518CrossRefGoogle Scholar
  27. Xu Q, Fan XM, Huang RQ, van Westen CJ (2009b) Landslide dams triggered by the Wenchuan earthquake, Sichuan Province, south west China. Bull Eng Geol Environ 68(3):373–386CrossRefGoogle Scholar
  28. Yarai H, Nishimura T, Tobita M, Amagai T, Suzuki A, Suito H, Ozawa S, Imakiire T, Masaharu H (2008) A fault model of the 2008 Wenchuan earthquake estimated from SAR measurements. 7th ASC meeting, X2-040Google Scholar
  29. Yin YP, Wang FW, Sun P (2009) Landslide hazards triggered by the 2008 Wenchuan earthquake, Sichuan, China. Landslides 6:139–151CrossRefGoogle Scholar
  30. Zeng JL, Zhang Z, Wen L, Tapponnier P, Sun J, Xing X, Hu G, Xu Q, Zeng L, Ding L, Ji C, Hudnut KW, van der Woerd J (2009) Co-seismic ruptures of the 12 May 2008, Ms 8.0 Wenchuan earthquake, Sichuan: east–west crustal shortening on oblique, parallel thrusts along the eastern edge of Tibet. Earth Planet Sci Lett 286:355–370CrossRefGoogle Scholar

Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  • Runqiu Huang
    • 1
  • Xiangjun Pei
    • 1
  • Xuanmei Fan
    • 1
    • 2
  • Weifeng Zhang
    • 1
  • Shigui Li
    • 1
  • Biliang Li
    • 1
  1. 1.The State Key Laboratory of Geohazards Prevention and Geoenvironment ProtectionChengdu University of TechnologyChengduChina
  2. 2.International Institute for Geo-Information Science and Earth Observation (ITC)EnschedeThe Netherlands

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