Failure Process Analysis of Landslide Triggered by Rainfall at Volcanic Area: Fangshan Landslide Case Study
The Fangshan landslide was a rainfall-induced landslide that occurred in a volcanic area in the Fangshan scenic spot, Nanjing, Jiangsu, China. On 25 October 2016, after approximately 10 days of continuous rainfall, a shallow landslide rapidly developed, which triggered slow movement of deep mudstone...
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MDPI AG
2022-12-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/14/24/4059 |
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| author | Weiwei Gu Zinan Li Cheng Lin Faming Zhang Menglong Dong Yukun Li Chang Liu |
| author_facet | Weiwei Gu Zinan Li Cheng Lin Faming Zhang Menglong Dong Yukun Li Chang Liu |
| author_sort | Weiwei Gu |
| collection | DOAJ |
| description | The Fangshan landslide was a rainfall-induced landslide that occurred in a volcanic area in the Fangshan scenic spot, Nanjing, Jiangsu, China. On 25 October 2016, after approximately 10 days of continuous rainfall, a shallow landslide rapidly developed, which triggered slow movement of deep mudstone rock. According to the characteristics of the landslide body, measures such as anti-slide piles, anchor cables and drainage were used to reinforce the landslide. Active drainage measures included arranging plant growth zones at the trailing edge of the landslide, and passive drainage measures included arranging pumping wells at the trailing edge of the landslide. It is worth emphasizing that the Fangshan landslide was the first example of a landslide in Jiangsu Province, China that was treated by actively lowering the water pressure. After landslide treatment from 16 May 2017 to 21 January 2018, the Fangshan landslide tended to be stable. However, the stable landslide was reactivated by the rise in groundwater level caused by rainfall and pumping well damage and underwent accelerated downward sliding in July 2020. The Fangshan landslide has caused great damage to the roads and buildings of Fangshan scenic spot, with a direct loss of RMB 6 million and an indirect loss of RMB 95 million. This article discusses the development process of the shallow soil landslide and the underlying deep mudstone rock landslide. The influence of groundwater level variation on the deformation of the shallow soil landslide and deep mudstone rock landslide of the Fangshan landslide are also discussed. |
| first_indexed | 2024-03-09T15:44:04Z |
| format | Article |
| id | doaj.art-ab40337a087b44faa054bacb3734e641 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-09T15:44:04Z |
| publishDate | 2022-12-01 |
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| record_format | Article |
| series | Water |
| spelling | doaj.art-ab40337a087b44faa054bacb3734e6412023-11-24T18:42:08ZengMDPI AGWater2073-44412022-12-011424405910.3390/w14244059Failure Process Analysis of Landslide Triggered by Rainfall at Volcanic Area: Fangshan Landslide Case StudyWeiwei Gu0Zinan Li1Cheng Lin2Faming Zhang3Menglong Dong4Yukun Li5Chang Liu6China Coal Changjiang Ecological Environment Technology Co., Ltd., Nanjing 210046, ChinaSchool of Earth Sciences and Engineering, Hohai University, Nanjing 211100, ChinaDepartment of Civil Engineering, University of Victoria, 3800 Finnerty Road, Victoria, BC V8P 5C2, CanadaSchool of Earth Sciences and Engineering, Hohai University, Nanjing 211100, ChinaSchool of Earth Sciences and Engineering, Hohai University, Nanjing 211100, ChinaSchool of Earth Sciences and Engineering, Hohai University, Nanjing 211100, ChinaSchool of Earth Sciences and Engineering, Hohai University, Nanjing 211100, ChinaThe Fangshan landslide was a rainfall-induced landslide that occurred in a volcanic area in the Fangshan scenic spot, Nanjing, Jiangsu, China. On 25 October 2016, after approximately 10 days of continuous rainfall, a shallow landslide rapidly developed, which triggered slow movement of deep mudstone rock. According to the characteristics of the landslide body, measures such as anti-slide piles, anchor cables and drainage were used to reinforce the landslide. Active drainage measures included arranging plant growth zones at the trailing edge of the landslide, and passive drainage measures included arranging pumping wells at the trailing edge of the landslide. It is worth emphasizing that the Fangshan landslide was the first example of a landslide in Jiangsu Province, China that was treated by actively lowering the water pressure. After landslide treatment from 16 May 2017 to 21 January 2018, the Fangshan landslide tended to be stable. However, the stable landslide was reactivated by the rise in groundwater level caused by rainfall and pumping well damage and underwent accelerated downward sliding in July 2020. The Fangshan landslide has caused great damage to the roads and buildings of Fangshan scenic spot, with a direct loss of RMB 6 million and an indirect loss of RMB 95 million. This article discusses the development process of the shallow soil landslide and the underlying deep mudstone rock landslide. The influence of groundwater level variation on the deformation of the shallow soil landslide and deep mudstone rock landslide of the Fangshan landslide are also discussed.https://www.mdpi.com/2073-4441/14/24/4059sequential sliding landslidevolcanic areapermeabilityground water level variationlong-term deep and surface displacement monitoring |
| spellingShingle | Weiwei Gu Zinan Li Cheng Lin Faming Zhang Menglong Dong Yukun Li Chang Liu Failure Process Analysis of Landslide Triggered by Rainfall at Volcanic Area: Fangshan Landslide Case Study Water sequential sliding landslide volcanic area permeability ground water level variation long-term deep and surface displacement monitoring |
| title | Failure Process Analysis of Landslide Triggered by Rainfall at Volcanic Area: Fangshan Landslide Case Study |
| title_full | Failure Process Analysis of Landslide Triggered by Rainfall at Volcanic Area: Fangshan Landslide Case Study |
| title_fullStr | Failure Process Analysis of Landslide Triggered by Rainfall at Volcanic Area: Fangshan Landslide Case Study |
| title_full_unstemmed | Failure Process Analysis of Landslide Triggered by Rainfall at Volcanic Area: Fangshan Landslide Case Study |
| title_short | Failure Process Analysis of Landslide Triggered by Rainfall at Volcanic Area: Fangshan Landslide Case Study |
| title_sort | failure process analysis of landslide triggered by rainfall at volcanic area fangshan landslide case study |
| topic | sequential sliding landslide volcanic area permeability ground water level variation long-term deep and surface displacement monitoring |
| url | https://www.mdpi.com/2073-4441/14/24/4059 |
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