Debris Flow Characteristics in Flume Experiments Considering Berm Installation
This study was conducted to identify the characteristics and mobility of debris flows and analyze the performance of a berm as a debris flow mitigation measure. The debris flow velocity, flow depth, Froude number, flow resistance coefficients, and mobility ratio were accordingly determined using the...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-03-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/5/2336 |
| _version_ | 1797413176839503872 |
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| author | Hyungjoon Chang Kukhyun Ryou Hojin Lee |
| author_facet | Hyungjoon Chang Kukhyun Ryou Hojin Lee |
| author_sort | Hyungjoon Chang |
| collection | DOAJ |
| description | This study was conducted to identify the characteristics and mobility of debris flows and analyze the performance of a berm as a debris flow mitigation measure. The debris flow velocity, flow depth, Froude number, flow resistance coefficients, and mobility ratio were accordingly determined using the results of flume tests. To analyze the influence of the berm, the results for a straight channel test without a berm were compared with those for a single-berm channel test. The debris flow velocity was observed to increase with increasing channel slope and decreasing volumetric concentration of sediment, whereas the mobility ratio was observed to increase with increasing channel slope and volumetric concentration of sediment. In addition, it was confirmed that the installation of a berm significantly decreased the debris flow velocity and mobility ratio. This indicates that a berm is an effective method for reducing damage to areas downstream of a debris flow by decreasing its potential mobility. By identifying the effects of berms on debris flow characteristics according to the channel slope and volumetric concentration of sediment, this study supports the development of berms to serve as debris flow damage mitigation measures. |
| first_indexed | 2024-03-09T05:13:52Z |
| format | Article |
| id | doaj.art-47bd33a3186b4a8e873cfbb4a97334e9 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T05:13:52Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-47bd33a3186b4a8e873cfbb4a97334e92023-12-03T12:46:45ZengMDPI AGApplied Sciences2076-34172021-03-01115233610.3390/app11052336Debris Flow Characteristics in Flume Experiments Considering Berm InstallationHyungjoon Chang0Kukhyun Ryou1Hojin Lee2School of Civil Engineering, Chungbuk National University, Cheongju 28644, KoreaSchool of Civil Engineering, Chungbuk National University, Cheongju 28644, KoreaSchool of Civil Engineering, Chungbuk National University, Cheongju 28644, KoreaThis study was conducted to identify the characteristics and mobility of debris flows and analyze the performance of a berm as a debris flow mitigation measure. The debris flow velocity, flow depth, Froude number, flow resistance coefficients, and mobility ratio were accordingly determined using the results of flume tests. To analyze the influence of the berm, the results for a straight channel test without a berm were compared with those for a single-berm channel test. The debris flow velocity was observed to increase with increasing channel slope and decreasing volumetric concentration of sediment, whereas the mobility ratio was observed to increase with increasing channel slope and volumetric concentration of sediment. In addition, it was confirmed that the installation of a berm significantly decreased the debris flow velocity and mobility ratio. This indicates that a berm is an effective method for reducing damage to areas downstream of a debris flow by decreasing its potential mobility. By identifying the effects of berms on debris flow characteristics according to the channel slope and volumetric concentration of sediment, this study supports the development of berms to serve as debris flow damage mitigation measures.https://www.mdpi.com/2076-3417/11/5/2336debris flowbermmitigation measurevolumetric concentration |
| spellingShingle | Hyungjoon Chang Kukhyun Ryou Hojin Lee Debris Flow Characteristics in Flume Experiments Considering Berm Installation Applied Sciences debris flow berm mitigation measure volumetric concentration |
| title | Debris Flow Characteristics in Flume Experiments Considering Berm Installation |
| title_full | Debris Flow Characteristics in Flume Experiments Considering Berm Installation |
| title_fullStr | Debris Flow Characteristics in Flume Experiments Considering Berm Installation |
| title_full_unstemmed | Debris Flow Characteristics in Flume Experiments Considering Berm Installation |
| title_short | Debris Flow Characteristics in Flume Experiments Considering Berm Installation |
| title_sort | debris flow characteristics in flume experiments considering berm installation |
| topic | debris flow berm mitigation measure volumetric concentration |
| url | https://www.mdpi.com/2076-3417/11/5/2336 |
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