Analysis on lag effect of typhoon-induced landslide: A case study of typhoon “Lekima” in Qingtian County, Zhejiang Province
Typhoon landing is frequent in the southeast coastal areas of China, and the typhoon-induced landslide caused by associated rainstorms has caused serious economic losses and casualties. Some studies have made some achievements in the slope hydrological response process and stability analysis of sing...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | zho |
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Editorial Office of The Chinese Journal of Geological Hazard and Control
2022-12-01
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| Series: | Zhongguo dizhi zaihai yu fangzhi xuebao |
| Subjects: | |
| Online Access: | https://www.zgdzzhyfzxb.com/en/article/doi/10.16031/j.cnki.issn.1003-8035.202110018 |
| _version_ | 1797862470553960448 |
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| author | Qianqian LI Wei WANG Liang HUANG Bo CHAI Le GAO |
| author_facet | Qianqian LI Wei WANG Liang HUANG Bo CHAI Le GAO |
| author_sort | Qianqian LI |
| collection | DOAJ |
| description | Typhoon landing is frequent in the southeast coastal areas of China, and the typhoon-induced landslide caused by associated rainstorms has caused serious economic losses and casualties. Some studies have made some achievements in the slope hydrological response process and stability analysis of single-peak and multi-peaks typhoon rainstorms, but research on mechanism analysis on the hysteresis effect of typhoon-induced landslide is lacked. Therefore, taking “Lekima” in Qingtian county, Zhejiang Province as an example, based on the statistics of the number and rainfall of typhoon-type landslides, this paper constructs 16 groups of slope models with different structural combinations to simulate the seepage-stability changes of slopes under different rainfall conditions during the landing of a typhoon. The results show that there are still 26.4% landslides in Qingtian county after typhoon “Lekima” left the land, which is lagging. The stability of slopes with different structural combinations is the lowest after landing, which is 13.82% lower than that before typhoon landing. Under the action of typhoon landing rainstorm, the slope is the most sensitive among the influencing parameters of slope stability structure in Qingtian county. It is considered that rainfall at different landing stages of the typhoon will lead to the difference of infiltration characteristics of the slope, thus forming a hysteresis effect. The conclusion has a certain guiding significance for the early identification of typhoon-induced landslides in this area. |
| first_indexed | 2024-04-09T22:19:56Z |
| format | Article |
| id | doaj.art-c733c08befc64256beca609d980e8dec |
| institution | Directory Open Access Journal |
| issn | 1003-8035 |
| language | zho |
| last_indexed | 2024-04-09T22:19:56Z |
| publishDate | 2022-12-01 |
| publisher | Editorial Office of The Chinese Journal of Geological Hazard and Control |
| record_format | Article |
| series | Zhongguo dizhi zaihai yu fangzhi xuebao |
| spelling | doaj.art-c733c08befc64256beca609d980e8dec2023-03-22T16:12:11ZzhoEditorial Office of The Chinese Journal of Geological Hazard and ControlZhongguo dizhi zaihai yu fangzhi xuebao1003-80352022-12-01336101910.16031/j.cnki.issn.1003-8035.202110018202110018Analysis on lag effect of typhoon-induced landslide: A case study of typhoon “Lekima” in Qingtian County, Zhejiang ProvinceQianqian LI0Wei WANG1Liang HUANG2Bo CHAI3Le GAO4School of Environmental Studies, China University of Geosciences（Wuhan）, Wuhan, Hubei 430074, ChinaSchool of Environmental Studies, China University of Geosciences（Wuhan）, Wuhan, Hubei 430074, ChinaCentral South Exploration & Foundation Engineering Co. Ltd., Wuhan, Hubei 430081, ChinaSchool of Environmental Studies, China University of Geosciences（Wuhan）, Wuhan, Hubei 430074, ChinaZhejiang Geological Prospecting Institute of CCGMB, Hangzhou, Zhejiang 310002, ChinaTyphoon landing is frequent in the southeast coastal areas of China, and the typhoon-induced landslide caused by associated rainstorms has caused serious economic losses and casualties. Some studies have made some achievements in the slope hydrological response process and stability analysis of single-peak and multi-peaks typhoon rainstorms, but research on mechanism analysis on the hysteresis effect of typhoon-induced landslide is lacked. Therefore, taking “Lekima” in Qingtian county, Zhejiang Province as an example, based on the statistics of the number and rainfall of typhoon-type landslides, this paper constructs 16 groups of slope models with different structural combinations to simulate the seepage-stability changes of slopes under different rainfall conditions during the landing of a typhoon. The results show that there are still 26.4% landslides in Qingtian county after typhoon “Lekima” left the land, which is lagging. The stability of slopes with different structural combinations is the lowest after landing, which is 13.82% lower than that before typhoon landing. Under the action of typhoon landing rainstorm, the slope is the most sensitive among the influencing parameters of slope stability structure in Qingtian county. It is considered that rainfall at different landing stages of the typhoon will lead to the difference of infiltration characteristics of the slope, thus forming a hysteresis effect. The conclusion has a certain guiding significance for the early identification of typhoon-induced landslides in this area.https://www.zgdzzhyfzxb.com/en/article/doi/10.16031/j.cnki.issn.1003-8035.202110018typhoon“lekima”typhoon-induced landslidelag effectqingtian |
| spellingShingle | Qianqian LI Wei WANG Liang HUANG Bo CHAI Le GAO Analysis on lag effect of typhoon-induced landslide: A case study of typhoon “Lekima” in Qingtian County, Zhejiang Province Zhongguo dizhi zaihai yu fangzhi xuebao typhoon “lekima” typhoon-induced landslide lag effect qingtian |
| title | Analysis on lag effect of typhoon-induced landslide: A case study of typhoon “Lekima” in Qingtian County, Zhejiang Province |
| title_full | Analysis on lag effect of typhoon-induced landslide: A case study of typhoon “Lekima” in Qingtian County, Zhejiang Province |
| title_fullStr | Analysis on lag effect of typhoon-induced landslide: A case study of typhoon “Lekima” in Qingtian County, Zhejiang Province |
| title_full_unstemmed | Analysis on lag effect of typhoon-induced landslide: A case study of typhoon “Lekima” in Qingtian County, Zhejiang Province |
| title_short | Analysis on lag effect of typhoon-induced landslide: A case study of typhoon “Lekima” in Qingtian County, Zhejiang Province |
| title_sort | analysis on lag effect of typhoon induced landslide a case study of typhoon lekima in qingtian county zhejiang province |
| topic | typhoon “lekima” typhoon-induced landslide lag effect qingtian |
| url | https://www.zgdzzhyfzxb.com/en/article/doi/10.16031/j.cnki.issn.1003-8035.202110018 |
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