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Int. J. Environ. Res. Public Health 2015, 12(8), 9181-9198; doi:10.3390/ijerph120809181

Analysis on Two Typical Landslide Hazard Phenomena in The Wenchuan Earthquake by Field Investigations and Shaking Table Tests

1
School of Civil Engineering, Key of Transportation Tnuuel Engineering, Ministry of Education, Southwest Jiaotong University, Chengdu 610031, China
2
Guangxi Key Laboratory of Disaster Prevention and Structural Safety, Guangxi University, Nanning 530004, China
3
Shanxi Transportation Research Institute, Taiyuan 030006, China
*
Author to whom correspondence should be addressed.
Academic Editor: Paul B. Tchounwou
Received: 13 April 2015 / Accepted: 20 May 2015 / Published: 6 August 2015

Abstract

Based on our field investigations of landslide hazards in the Wenchuan earthquake, some findings can be reported: (1) the multi-aspect terrain facing empty isolated mountains and thin ridges reacted intensely to the earthquake and was seriously damaged; (2) the slope angles of most landslides was larger than 45°. Considering the above disaster phenomena, the reasons are analyzed based on shaking table tests of one-sided, two-sided and four-sided slopes. The analysis results show that: (1) the amplifications of the peak accelerations of four-sided slopes is stronger than that of the two-sided slopes, while that of the one-sided slope is the weakest, which can indirectly explain the phenomena that the damage is most serious; (2) the amplifications of the peak accelerations gradually increase as the slope angles increase, and there are two inflection points which are the point where the slope angle is 45° and where the slope angle is 50°, respectively, which can explain the seismic phenomenon whereby landslide hazards mainly occur on the slopes whose slope angle is bigger than 45°. The amplification along the slope strike direction is basically consistent, and the step is smooth. View Full-Text
Keywords: landslide hazards; slope type; slope angle; shaking table test; field investigations landslide hazards; slope type; slope angle; shaking table test; field investigations
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Yang, C.; Zhang, J.; Liu, F.; Bi, J.; Jun, Z. Analysis on Two Typical Landslide Hazard Phenomena in The Wenchuan Earthquake by Field Investigations and Shaking Table Tests. Int. J. Environ. Res. Public Health 2015, 12, 9181-9198.

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