American Journal of Civil Engineering
Volume 5, Issue 6, November 2017, Pages: 408-413
Received: Dec. 27, 2017;
Published: Dec. 28, 2017
Views 751 Downloads 40
Ranran Pei, School of Architecture and Civil Engineering, Liaocheng University, Liaocheng, China
Zhenqiang Ni, School of Architecture and Civil Engineering, Liaocheng University, Liaocheng, China
Zhaobo Meng, School of Architecture and Civil Engineering, Liaocheng University, Liaocheng, China
Baoliang Zhang, School of Architecture and Civil Engineering, Liaocheng University, Liaocheng, China
Rumeng Liao, School of Architecture and Civil Engineering, Liaocheng University, Liaocheng, China
Tens of thousands of secondary mountain disasters such as landslides, debris flows were triggered after the Ms 8.0 Wenchuan earthquake on May 12, 2008. Large amounts of loose material were produced in gullies or on slopes, which will endanger resettled residents and destroy urban reconstruction. During the 5 years following the Wenchuan earthquake event, heavy rainfalls have already induced a great number of debris flows, barrier lakes and collapses in the earthquake-damaged area, resulting in serious casualties and property losses. The emergence and development of these disasters affect each other and are linked closely. Hence, it is important to understand the characteristics and shape of the disaster chains. In order to analyze the characteristics of secondary mountain disaster chain in Wenchuan earthquake, this paper carried out research using field survey and data statistical analysis. A large number of recording materials were reviewed and compiled to analyze more than 2440 debris flows, landslides, collapses and barrier lakes in different areas of Wenchuan, Beichuan, Dujiangyan and so on. The results showed that: the Wenchuan earthquake secondary mountain hazards are mainly distributed in Beichuan, Wenchuan, Dujiangyan and other regions near earthquake source, frequency decreases with the distance increasing source distance. The secondary disaster chain can be divided into 4 grades and 9 types, and a comprehensive type; each disaster chain consists of two or more disasters in earthquake. Precipitation and surface run off have great influence on secondary mountain disasters, and become important media for the formation of chain chains in secondary disasters. This study has some guidance to the judgment and prevention of the secondary disaster chain after earthquake.
Characteristics of Secondary Mountain Disaster Chain in Wenchuan Earthquake, American Journal of Civil Engineering.
Vol. 5, No. 6,
2017, pp. 408-413.
K. P. Men, and J. G. Jiang. “Severe disaster chain and its defense,” Progress in geophysics, vol. 23, 2008, pp. 270–275.
H. Xie, S. G. Shi, and J. M. Kong. “Distribution and characteristics of mountain hazards induced by the earthquake of May 12 in Wenchuan, China,” Journal of Mountain Research, vol. 26. 2008, pp. 396–401.
Z. L. Zhi, P. Cui and S. M. He, “Mechanism of conversion of landslides to debris flows,” vol. 14, Journal of Natural Disadters, 2005, pp. 8–14.
J. M. Kong, Y. Cui, S. J. Tian and F. Y. A, “Typical Case Study on the Development Characteristics of Fragmentation-sliding Seismic Landslide,” Journal of Sichuan University (Engineering Science Edition), vol. 41, 2009, pp. 119-124.
S. D. Li, X. S. Ren, S. Y. Yue and H. P. Xu, “Study of Earthquake and slide,” Research of Soil and Water Conservation, vol. 8, 2001, pp. 24-25.
J. J. Jin, “China Mainland Earthquake Disasters and the Mitigation Suggestions in 1996~2005,” Journal of Geological Hazards and Environment Preservation, vol. 18, 2007, pp. 1–5.
P. Cui, F. Q. Wei, S. M. He, et al., “Mountain Disaster Induced by the Earthquake of May 12 in Wenchuan and the Disasters Mitigation,” Journal of Mountain Science, vol. 26, 2008, pp. 280-282.
Z. S. Jiang, L. G. Yuan, D. F. Huang, et al, “Postseismic deformation associated with the 2008 Mw 7.9 Wenchuan earthquake, China: Constraining fault geometry and investigating a detailed spatial distribution of after slip,” Journal of Geodynamics, vol. 12, 2017, pp. 12-21.
S. Zhang and L. M. Zhang, “Impact of the 2008 Wenchuan earthquake in China on subsequent long-term debris flow activities in the epicentral area,” Geomorphology, vol. 276, 2016, pp. 86-103.
R. Huang and W. Li, “Post-earthquake land sliding and long-term impacts in the Wenchuan earthquake area, China,” Engineering Geology, vol. 182, 2014, pp. 111-120.
M. H. Huang, R. Bürgmann and A. M. Freed, “Probing the lithospheric rheology across the eastern margin of the tibetan plateau,” Earth & Planetary Science Letters, vol. 396, 2014, pp. 88-96.
Klein, E., et al. “Afterslip and viscoelastic relaxation model inferred from the large-scale post-seismic deformation following the 2010 Mw 8.8 Maule earthquake (Chile),” Geophysical Journal International, vol. 205, 2016, ggw086.
Tan Hongbo, et al. “Wenchuan Ms8.0 earthquake coseismic slip distribution inversion,” Geodesy and Geodynamics, vol. 6, 2015, pp. 173-179.
C. Liu, P. Y. Dong, and Y. L. Shi. “Recurrence interval of the 2008 Mw 7.9 Wenchuan earthquake inferred from geodynamic modelling stress buildup and release,” Journal of Geodynamics vol. 110, 2017, pp. 1-11.