Dynamic response of the Daguangbao landslide triggered by the Wenchuan earthquake with a composite hypocenter
To identify the correspondence between the different dynamic responses of the Daguangbao landslide and the different faulting mechanisms of the composite-hypocenter, the whole hypocenter of the Wenchuan earthquake was divided into four sub-hypocenters. On another hand, based on the location of the D...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2021-01-01
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| Series: | Geomatics, Natural Hazards & Risk |
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| Online Access: | http://dx.doi.org/10.1080/19475705.2021.1944916 |
| _version_ | 1818324020599193600 |
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| author | Fangpeng Cui Chen Xiong Qiang Wu Chong Xu Ning Li Ning'an Wu Li Cui |
| author_facet | Fangpeng Cui Chen Xiong Qiang Wu Chong Xu Ning Li Ning'an Wu Li Cui |
| author_sort | Fangpeng Cui |
| collection | DOAJ |
| description | To identify the correspondence between the different dynamic responses of the Daguangbao landslide and the different faulting mechanisms of the composite-hypocenter, the whole hypocenter of the Wenchuan earthquake was divided into four sub-hypocenters. On another hand, based on the location of the Dauangbao landslide, the composite-hypocenter was divided into the Initial Sub-hypocenter, the Approaching Sub-hypocenter, the Local Sub-hypocenter, the Receding sub-hypocenter and the Terminal sub-hypocenter. Subsequently, dynamic response of the landslide was modeled by using UDEC software. The results show that progressive damage and critical failure of the mega landslide are triggered by the second sub-hypocenter. Simutaneously, with respect to the second classification basis, its progressive damage is induced by the Approaching Hypocenter and the Local Hypocenter in time sequence. The Local Hypocenter triggers its critical failure. During the long-runout stage, besides the local topography, its self-gravity poses a dominant contribution to the dynamic responses of the landslide. Especially, the inertial seismic force is another key factor that triggers the ejection stage of the landslide. The following seismic forces triggered by the corresponding sub-hypocenter influence the long-runout stage slightly. The horizontal seismic force poses a dominant contribution to the progressive damage and critical failure of the mega landslide. |
| first_indexed | 2024-12-13T11:21:57Z |
| format | Article |
| id | doaj.art-8fc1b1771d3f4ad0834a622146e92b0d |
| institution | Directory Open Access Journal |
| issn | 1947-5705 1947-5713 |
| language | English |
| last_indexed | 2024-12-13T11:21:57Z |
| publishDate | 2021-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Geomatics, Natural Hazards & Risk |
| spelling | doaj.art-8fc1b1771d3f4ad0834a622146e92b0d2022-12-21T23:48:26ZengTaylor & Francis GroupGeomatics, Natural Hazards & Risk1947-57051947-57132021-01-011212170219310.1080/19475705.2021.19449161944916Dynamic response of the Daguangbao landslide triggered by the Wenchuan earthquake with a composite hypocenterFangpeng Cui0Chen Xiong1Qiang Wu2Chong Xu3Ning Li4Ning'an Wu5Li Cui6School of Geoscience and Surveying Engineering, China University of Mining and Technology-BeijingSchool of Geoscience and Surveying Engineering, China University of Mining and Technology-BeijingSchool of Geoscience and Surveying Engineering, China University of Mining and Technology-BeijingInstitute of Geology, China Earthquake Administration, Beijing ChinaSchool of Geoscience and Surveying Engineering, China University of Mining and Technology-BeijingSchool of Geoscience and Surveying Engineering, China University of Mining and Technology-BeijingSchool of Geoscience and Surveying Engineering, China University of Mining and Technology-BeijingTo identify the correspondence between the different dynamic responses of the Daguangbao landslide and the different faulting mechanisms of the composite-hypocenter, the whole hypocenter of the Wenchuan earthquake was divided into four sub-hypocenters. On another hand, based on the location of the Dauangbao landslide, the composite-hypocenter was divided into the Initial Sub-hypocenter, the Approaching Sub-hypocenter, the Local Sub-hypocenter, the Receding sub-hypocenter and the Terminal sub-hypocenter. Subsequently, dynamic response of the landslide was modeled by using UDEC software. The results show that progressive damage and critical failure of the mega landslide are triggered by the second sub-hypocenter. Simutaneously, with respect to the second classification basis, its progressive damage is induced by the Approaching Hypocenter and the Local Hypocenter in time sequence. The Local Hypocenter triggers its critical failure. During the long-runout stage, besides the local topography, its self-gravity poses a dominant contribution to the dynamic responses of the landslide. Especially, the inertial seismic force is another key factor that triggers the ejection stage of the landslide. The following seismic forces triggered by the corresponding sub-hypocenter influence the long-runout stage slightly. The horizontal seismic force poses a dominant contribution to the progressive damage and critical failure of the mega landslide.http://dx.doi.org/10.1080/19475705.2021.1944916a composite hypocentredip-slip faulting mechanismoblique-slip faulting mechanismstrike-slip faulting mechanisminitial sub-hypocenterlocal sub-hypocenterterminal sub-hypocenter |
| spellingShingle | Fangpeng Cui Chen Xiong Qiang Wu Chong Xu Ning Li Ning'an Wu Li Cui Dynamic response of the Daguangbao landslide triggered by the Wenchuan earthquake with a composite hypocenter Geomatics, Natural Hazards & Risk a composite hypocentre dip-slip faulting mechanism oblique-slip faulting mechanism strike-slip faulting mechanism initial sub-hypocenter local sub-hypocenter terminal sub-hypocenter |
| title | Dynamic response of the Daguangbao landslide triggered by the Wenchuan earthquake with a composite hypocenter |
| title_full | Dynamic response of the Daguangbao landslide triggered by the Wenchuan earthquake with a composite hypocenter |
| title_fullStr | Dynamic response of the Daguangbao landslide triggered by the Wenchuan earthquake with a composite hypocenter |
| title_full_unstemmed | Dynamic response of the Daguangbao landslide triggered by the Wenchuan earthquake with a composite hypocenter |
| title_short | Dynamic response of the Daguangbao landslide triggered by the Wenchuan earthquake with a composite hypocenter |
| title_sort | dynamic response of the daguangbao landslide triggered by the wenchuan earthquake with a composite hypocenter |
| topic | a composite hypocentre dip-slip faulting mechanism oblique-slip faulting mechanism strike-slip faulting mechanism initial sub-hypocenter local sub-hypocenter terminal sub-hypocenter |
| url | http://dx.doi.org/10.1080/19475705.2021.1944916 |
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