Influences of a debris flow disaster chain on buildings in remote rural areas, Southwest China
The magnitude and frequency of mountain hazards will continue to increase because of climate change especially in rural mountainous areas, which have not received much attention. In this article, a debris flow disaster chain in Southwest China caused damage to buildings along the river bank was inve...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2022-12-01
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| Series: | Geomatics, Natural Hazards & Risk |
| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/19475705.2022.2132183 |
| _version_ | 1828160997502746624 |
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| author | Lu Zeng Yonggang Ge Jiangang Chen Fenghuan Su Huayong Chen Wanyu Zhao Guangwu Si |
| author_facet | Lu Zeng Yonggang Ge Jiangang Chen Fenghuan Su Huayong Chen Wanyu Zhao Guangwu Si |
| author_sort | Lu Zeng |
| collection | DOAJ |
| description | The magnitude and frequency of mountain hazards will continue to increase because of climate change especially in rural mountainous areas, which have not received much attention. In this article, a debris flow disaster chain in Southwest China caused damage to buildings along the river bank was investigated. The disaster chain included a debris flow, river blockage, lake formation, and an outbreak flood, and this study further investigated the disaster-related losses in downstream villages. Based on the characteristics of failed buildings, three structural types were identified, while the functions of undamaged buildings were affected by flooding or siltation by sediments. In addition, the building layout and riparian vegetation zone influenced the blockage effect, which resisted the flood impact and provided protection to rear buildings. Moreover, this disaster changed the river topography, the studied reach changed from a V shape to a wide–shallow shape, the appreciably affected river length was 6270 m, and the gully bed was noticeably raised 15–20 m. Furthermore, the flood control standard of a 50-year return period was recommended for reference, despite the limitations of these suggestions, we hope that this study attracts the attention of researchers on disaster prevention and mitigation in remote rural areas. |
| first_indexed | 2024-04-12T00:31:15Z |
| format | Article |
| id | doaj.art-ba4cb6961a6e4566b92988eda0fc3e30 |
| institution | Directory Open Access Journal |
| issn | 1947-5705 1947-5713 |
| language | English |
| last_indexed | 2024-04-12T00:31:15Z |
| publishDate | 2022-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Geomatics, Natural Hazards & Risk |
| spelling | doaj.art-ba4cb6961a6e4566b92988eda0fc3e302022-12-22T03:55:20ZengTaylor & Francis GroupGeomatics, Natural Hazards & Risk1947-57051947-57132022-12-011312777279510.1080/19475705.2022.2132183Influences of a debris flow disaster chain on buildings in remote rural areas, Southwest ChinaLu Zeng0Yonggang Ge1Jiangang Chen2Fenghuan Su3Huayong Chen4Wanyu Zhao5Guangwu Si6Key Laboratory of Mountain Hazards and Earth Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences (CAS), Chengdu, ChinaKey Laboratory of Mountain Hazards and Earth Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences (CAS), Chengdu, ChinaKey Laboratory of Mountain Hazards and Earth Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences (CAS), Chengdu, ChinaKey Laboratory of Mountain Hazards and Earth Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences (CAS), Chengdu, ChinaKey Laboratory of Mountain Hazards and Earth Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences (CAS), Chengdu, ChinaKey Laboratory of Mountain Hazards and Earth Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences (CAS), Chengdu, ChinaKey Laboratory of Mountain Hazards and Earth Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences (CAS), Chengdu, ChinaThe magnitude and frequency of mountain hazards will continue to increase because of climate change especially in rural mountainous areas, which have not received much attention. In this article, a debris flow disaster chain in Southwest China caused damage to buildings along the river bank was investigated. The disaster chain included a debris flow, river blockage, lake formation, and an outbreak flood, and this study further investigated the disaster-related losses in downstream villages. Based on the characteristics of failed buildings, three structural types were identified, while the functions of undamaged buildings were affected by flooding or siltation by sediments. In addition, the building layout and riparian vegetation zone influenced the blockage effect, which resisted the flood impact and provided protection to rear buildings. Moreover, this disaster changed the river topography, the studied reach changed from a V shape to a wide–shallow shape, the appreciably affected river length was 6270 m, and the gully bed was noticeably raised 15–20 m. Furthermore, the flood control standard of a 50-year return period was recommended for reference, despite the limitations of these suggestions, we hope that this study attracts the attention of researchers on disaster prevention and mitigation in remote rural areas.https://www.tandfonline.com/doi/10.1080/19475705.2022.2132183Building blockage effectdebris flowdeposition morphologydisaster chainoutbreak flood |
| spellingShingle | Lu Zeng Yonggang Ge Jiangang Chen Fenghuan Su Huayong Chen Wanyu Zhao Guangwu Si Influences of a debris flow disaster chain on buildings in remote rural areas, Southwest China Geomatics, Natural Hazards & Risk Building blockage effect debris flow deposition morphology disaster chain outbreak flood |
| title | Influences of a debris flow disaster chain on buildings in remote rural areas, Southwest China |
| title_full | Influences of a debris flow disaster chain on buildings in remote rural areas, Southwest China |
| title_fullStr | Influences of a debris flow disaster chain on buildings in remote rural areas, Southwest China |
| title_full_unstemmed | Influences of a debris flow disaster chain on buildings in remote rural areas, Southwest China |
| title_short | Influences of a debris flow disaster chain on buildings in remote rural areas, Southwest China |
| title_sort | influences of a debris flow disaster chain on buildings in remote rural areas southwest china |
| topic | Building blockage effect debris flow deposition morphology disaster chain outbreak flood |
| url | https://www.tandfonline.com/doi/10.1080/19475705.2022.2132183 |
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