Analysis of Channel Evolution and Its Influence of Xunwu River in Source Area of Dongjiang River Based on GIS Technology
Based on the measured data of large fixed sections at Shuibei Hydrological Station from 2010 to 2020 and the underwater topographic survey data near Shuibei Hydrological Station,this paper constructs a topographic database of underwater sections and a three-dimensional underwater topographic model n...
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Editorial Office of Pearl River
2021-01-01
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| Series: | Renmin Zhujiang |
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| Online Access: | http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2021.10.008 |
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| author | CHEN Chuan ZENG Jinfeng |
| author_facet | CHEN Chuan ZENG Jinfeng |
| author_sort | CHEN Chuan |
| collection | DOAJ |
| description | Based on the measured data of large fixed sections at Shuibei Hydrological Station from 2010 to 2020 and the underwater topographic survey data near Shuibei Hydrological Station,this paper constructs a topographic database of underwater sections and a three-dimensional underwater topographic model near Shuibei Hydrological Station for riverbed change analysis by using GIS technology,analyzes the channel scouring and silting in single Shuibei Station section of the main stream of Xunwu River in terms of temporal and spatial change,and discusses the influencing factors and the influence of the changes.The results show that:GIS technology is an effective method to study the changes of river topography.The average annual river-bed elevation of Shuibei Station section of the main stream of Xunwu River decreased by 0.75 m from 2010 to 2015,and by 0.52 m from 2015 to 2020.With the scouring of the main channel terrain during 2010—2020,the average undercut depth is 1.27 m.The main factors for the topographic change of the river channel in this section are the sand restraining of power plants,the sand mining of river channels and the comprehensive treatment of abandoned mines.The annual undercut of river channels will increase the storage capacity of river channels and increase the reverberation time of pollutants in the downstream channels,thus worsening the water quality.In a worse case,the severe evolution of riverbed may cause the dangerous situation of the bridge across the river and even the hollowing out or collapse of embankment. |
| format | Article |
| id | doaj-art-dbe65920a0344f42a88bfced29e83404 |
| institution | Kabale University |
| issn | 1001-9235 |
| language | zho |
| publishDate | 2021-01-01 |
| publisher | Editorial Office of Pearl River |
| record_format | Article |
| series | Renmin Zhujiang |
| spelling | doaj-art-dbe65920a0344f42a88bfced29e834042025-01-15T02:27:58ZzhoEditorial Office of Pearl RiverRenmin Zhujiang1001-92352021-01-014247646056Analysis of Channel Evolution and Its Influence of Xunwu River in Source Area of Dongjiang River Based on GIS TechnologyCHEN ChuanZENG JinfengBased on the measured data of large fixed sections at Shuibei Hydrological Station from 2010 to 2020 and the underwater topographic survey data near Shuibei Hydrological Station,this paper constructs a topographic database of underwater sections and a three-dimensional underwater topographic model near Shuibei Hydrological Station for riverbed change analysis by using GIS technology,analyzes the channel scouring and silting in single Shuibei Station section of the main stream of Xunwu River in terms of temporal and spatial change,and discusses the influencing factors and the influence of the changes.The results show that:GIS technology is an effective method to study the changes of river topography.The average annual river-bed elevation of Shuibei Station section of the main stream of Xunwu River decreased by 0.75 m from 2010 to 2015,and by 0.52 m from 2015 to 2020.With the scouring of the main channel terrain during 2010—2020,the average undercut depth is 1.27 m.The main factors for the topographic change of the river channel in this section are the sand restraining of power plants,the sand mining of river channels and the comprehensive treatment of abandoned mines.The annual undercut of river channels will increase the storage capacity of river channels and increase the reverberation time of pollutants in the downstream channels,thus worsening the water quality.In a worse case,the severe evolution of riverbed may cause the dangerous situation of the bridge across the river and even the hollowing out or collapse of embankment.http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2021.10.008GISriver channel evolutioninfluence analysismain stream of Xunwu Riversource area of Dongjiang River |
| spellingShingle | CHEN Chuan ZENG Jinfeng Analysis of Channel Evolution and Its Influence of Xunwu River in Source Area of Dongjiang River Based on GIS Technology Renmin Zhujiang GIS river channel evolution influence analysis main stream of Xunwu River source area of Dongjiang River |
| title | Analysis of Channel Evolution and Its Influence of Xunwu River in Source Area of Dongjiang River Based on GIS Technology |
| title_full | Analysis of Channel Evolution and Its Influence of Xunwu River in Source Area of Dongjiang River Based on GIS Technology |
| title_fullStr | Analysis of Channel Evolution and Its Influence of Xunwu River in Source Area of Dongjiang River Based on GIS Technology |
| title_full_unstemmed | Analysis of Channel Evolution and Its Influence of Xunwu River in Source Area of Dongjiang River Based on GIS Technology |
| title_short | Analysis of Channel Evolution and Its Influence of Xunwu River in Source Area of Dongjiang River Based on GIS Technology |
| title_sort | analysis of channel evolution and its influence of xunwu river in source area of dongjiang river based on gis technology |
| topic | GIS river channel evolution influence analysis main stream of Xunwu River source area of Dongjiang River |
| url | http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2021.10.008 |
| work_keys_str_mv | AT chenchuan analysisofchannelevolutionanditsinfluenceofxunwuriverinsourceareaofdongjiangriverbasedongistechnology AT zengjinfeng analysisofchannelevolutionanditsinfluenceofxunwuriverinsourceareaofdongjiangriverbasedongistechnology |