On characteristics and dynamic analysis of the Niumian valley rock avalanche triggered by the 2008 Wenchuan earthquake, Sichuan, China

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• 作者：A. G. Xing ; Q. Xu ; J. J. Gan
• 关键词：Rock avalanche ; Dynamic characteristics ; Deposits characteristics ; Run ; out behavior ; Wenchuan earthquake
• 刊名：Environmental Earth Sciences
• 出版年：2015
• 出版时间：April 2015
• 年：2015
• 卷：73
• 期：7
• 页码：3387-3401
• 全文大小：4,969 KB
• 参考文献：1. Chigira, M, Wu, XY, Inokuchi, T, Wang, GH (2010) Landslides induced by the 2008 Wenchuan earthquake, Sichuan. China Geomorphol 118: pp. 225-238 CrossRef
  2. Cleary, PW, Prakash, M (2004) Discrete-element modelling and smoothed particle hydrodynamics: potential in the environmental sciences. Philos Trans Royal Soc A Math Phys Eng Sci 362: pp. 2003-2030 CrossRef
  3. Crosta, GB, Imposimato, S, Roddeman, DG (2003) Numerical modelling of large landslides stability and runout. Natural Hazards Earth Syst Sci 3: pp. 523-538 CrossRef
  4. Dai, FC, Lee, CF, Deng, JH, Tham, LG (2005) The 1786 earthquake-triggered landslide dam and subsequent dam-break flood on the Dadu River, southwestern China. Geomorphology 65: pp. 205-221 CrossRef
  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: pp. 883-895 CrossRef
  6. Dai, FC, Tu, XB, Xu, C, Gong, QM, Yao, X (2011) Rock avalanches triggered by oblique-thrusting during the 12 May 2008 Ms 8.0 Wenchuan earthquake, China. Geomorphology 132: pp. 300-318 CrossRef
  7. Dai, ZL, Huang, Y, Cheng, HL, Xu, Q (2014) 3D numerical modeling using smoothed particle hydrodynamics of flow-like landslide propagation triggered by the 2008 Wenchuan earthquake. Eng Geol.
  8. Evans, SG, Hungr, O, Clague, JJ (2001) Dynamics of the 1984 rock avalanche and associated distal debris flow on Mount Cayley, British Columbia, Canada; implications for landslide hazard assessment on dissected volcanoes. Eng Geol 61: pp. 29-51 CrossRef
  9. Evans, SG, R.H Guthrie, RH, Roberts, NJ, Bishop, NF (2007) The disastrous 17 February 2006 rockslide-debris avalanche on Leyte Island, Philippines: a catastrophic landslide in tropical mountain terrain. Natural Hazards Earth Syst Sci 7: pp. 89-101 CrossRef
  10. Fu BH, Wang P, Kong P, Shi PL, Zheng GD (2009) Atlas of Seismological and Geological Disasters Associated with the 12 May 2008 Ms 8.0 Wenchuan Great Earthquake, Sichuan, China. Seismological press, Beijing (in Chinese and in English)
  11. Gorum, T, Fan, XM, 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 133: pp. 152-167 CrossRef
  12. Haddad, B, Pastor, M, Palacios, D, Munoz-Salinas, E (2010) A SPH depth integrated model for Popocatepetl 2001 lahar (Mexico): sensitivity analysis and runout simulation. Eng Geol 114: pp. 312-329 CrossRef
  13. Huang, RQ (2009) Some catastrophic landslides since the twentieth century in the southwest of China. Landslides 6: pp. 69-81 CrossRef
  14. Huang, Y, Dai, ZL (2014) Large deformation and failure simulations for geo-disasters using smoothed particle hydrodynamics method. Eng Geol 168: pp. 86-97 CrossRef
  15. Huang, RQ, Fan, XM (2013) The landslide story. Nat Geosci 6: pp. 325-326 CrossRef
  16. Huang, RQ, Xu, Q, Huo, JJ (2011) Mechanism and geo-mechanics models of landslides triggered by 5.12 Wenchuan earthquake. J Mt Sci 8: pp. 200-210 CrossRef
  17. Huang, Y, Dai, ZL, Zhang, WJ, Chen, ZY (2011) Visual simulation of landslide fluidized movement based on smoothed particle hydrodynamics. Na
• 刊物类别：Earth and Environmental Science
• 刊物主题：None Assigned
• 出版者：Springer Berlin Heidelberg
• ISSN：1866-6299

文摘

On May 12, 2008, a large catastrophic rock avalanche was triggered by the Wenchuan earthquake on Niumian valley in Yingxiu town, Wenchuan County, China. The displaced landslide materials traveled about 2,640?m with a descent of about 850?m and buried several houses and caused nearly 20 casualties. Based on detailed field investigation, some basic characteristics of this landslide are introduced. Field investigation showed that the displaced landslide materials experienced three times of run-up and twice of superelevation along the run-out path, and downslope enlargement due to the entrainment of run-out path materials. A numerical model (DAN3D) is used to simulate the landsliding process. By means of trial and error, it can be seen that the Voellmy model and values of friction coefficient f?=?0.19 (dimensionless) and turbulent coefficient \(\xi\) ?=?2,000?m/s2 can provide the best performance in the prediction of sliding and depositing areas. The simulated results show that the duration of the rock avalanche is about 120?s with an average velocity of 22?m/s.