Movement Characteristics of Typhoon Rainstorm-Triggered Debris Flow in Qinglong Gully Based on Massflow Model
Typhoon Lekima made landfall on August 10,2019,causing a massive typhoon rainstorm-triggered debris flow in Qinglong Gully located in the middle and low mountainous area of southern Anhui.To deeply explore the movement characteristics of the typhoon rainstorm-triggered debris flow,this study identif...
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Editorial Office of Pearl River
2023-01-01
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| Series: | Renmin Zhujiang |
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| Online Access: | http://www.renminzhujiang.cn/thesisDetails?columnId=47642604&Fpath=home&index=0 |
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| author | XIONG Chaozheng JI Feng SHI Yuchuan |
| author_facet | XIONG Chaozheng JI Feng SHI Yuchuan |
| author_sort | XIONG Chaozheng |
| collection | DOAJ |
| description | Typhoon Lekima made landfall on August 10,2019,causing a massive typhoon rainstorm-triggered debris flow in Qinglong Gully located in the middle and low mountainous area of southern Anhui.To deeply explore the movement characteristics of the typhoon rainstorm-triggered debris flow,this study identifies the characteristics,formation conditions,and source distribution of Qinglong Gully.On this basis,it builds a high-precision three-dimensional model of the study area to calculate two working conditions of the non-typhoon rainstorm and typhoon rainstorm.In addition,Massflow,the software for surface-process dynamic numerical analysis,is employed for numerical simulation and comparative analysis of debris-flow movement characteristics.The results show that the typhoon rainstorm-triggered debris flow has a faster forward speed compared with the non-typhoon rainstorm-triggered debris flow.It moves to the monitoring points j1—j5 at 600 s,100 s,1500 s,1 600 s,and 1 900 s,respectively,and the front can cause damage to the channels and buildings along the way in a short time.Three main accumulation areas are formed in the outbreak of the debris flow.The maximum accumulation thickness of the typhoon rainstorm-triggered debris flow is 3.08 m,3.80 m,and 7.75 m,and the accumulation area is 36 324.4 m<sup>2</sup>,3 700.4 m<sup>2</sup>,and 32 279.5 m<sup>2</sup>,respectively.The debris flow has the characteristics of a large height and plane range of influence,which is more likely to cause serious life and property damage to engineering buildings and residents. |
| format | Article |
| id | doaj-art-bb59dfecd8e6420fb41df5ec4c90eb7f |
| institution | Kabale University |
| issn | 1001-9235 |
| language | zho |
| publishDate | 2023-01-01 |
| publisher | Editorial Office of Pearl River |
| record_format | Article |
| series | Renmin Zhujiang |
| spelling | doaj-art-bb59dfecd8e6420fb41df5ec4c90eb7f2025-01-15T02:23:16ZzhoEditorial Office of Pearl RiverRenmin Zhujiang1001-92352023-01-014447642604Movement Characteristics of Typhoon Rainstorm-Triggered Debris Flow in Qinglong Gully Based on Massflow ModelXIONG ChaozhengJI FengSHI YuchuanTyphoon Lekima made landfall on August 10,2019,causing a massive typhoon rainstorm-triggered debris flow in Qinglong Gully located in the middle and low mountainous area of southern Anhui.To deeply explore the movement characteristics of the typhoon rainstorm-triggered debris flow,this study identifies the characteristics,formation conditions,and source distribution of Qinglong Gully.On this basis,it builds a high-precision three-dimensional model of the study area to calculate two working conditions of the non-typhoon rainstorm and typhoon rainstorm.In addition,Massflow,the software for surface-process dynamic numerical analysis,is employed for numerical simulation and comparative analysis of debris-flow movement characteristics.The results show that the typhoon rainstorm-triggered debris flow has a faster forward speed compared with the non-typhoon rainstorm-triggered debris flow.It moves to the monitoring points j1—j5 at 600 s,100 s,1500 s,1 600 s,and 1 900 s,respectively,and the front can cause damage to the channels and buildings along the way in a short time.Three main accumulation areas are formed in the outbreak of the debris flow.The maximum accumulation thickness of the typhoon rainstorm-triggered debris flow is 3.08 m,3.80 m,and 7.75 m,and the accumulation area is 36 324.4 m<sup>2</sup>,3 700.4 m<sup>2</sup>,and 32 279.5 m<sup>2</sup>,respectively.The debris flow has the characteristics of a large height and plane range of influence,which is more likely to cause serious life and property damage to engineering buildings and residents.http://www.renminzhujiang.cn/thesisDetails?columnId=47642604&Fpath=home&index=0typhoon rainstormdebris flowmovement characteristicsnumerical simulation |
| spellingShingle | XIONG Chaozheng JI Feng SHI Yuchuan Movement Characteristics of Typhoon Rainstorm-Triggered Debris Flow in Qinglong Gully Based on Massflow Model Renmin Zhujiang typhoon rainstorm debris flow movement characteristics numerical simulation |
| title | Movement Characteristics of Typhoon Rainstorm-Triggered Debris Flow in Qinglong Gully Based on Massflow Model |
| title_full | Movement Characteristics of Typhoon Rainstorm-Triggered Debris Flow in Qinglong Gully Based on Massflow Model |
| title_fullStr | Movement Characteristics of Typhoon Rainstorm-Triggered Debris Flow in Qinglong Gully Based on Massflow Model |
| title_full_unstemmed | Movement Characteristics of Typhoon Rainstorm-Triggered Debris Flow in Qinglong Gully Based on Massflow Model |
| title_short | Movement Characteristics of Typhoon Rainstorm-Triggered Debris Flow in Qinglong Gully Based on Massflow Model |
| title_sort | movement characteristics of typhoon rainstorm triggered debris flow in qinglong gully based on massflow model |
| topic | typhoon rainstorm debris flow movement characteristics numerical simulation |
| url | http://www.renminzhujiang.cn/thesisDetails?columnId=47642604&Fpath=home&index=0 |
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