Analysis of Riverbed Evolution of the Waigaoqiao Branch Channel of the Yangtze Estuary in Flood Period Under New Water and Sediment Conditions

Dai Wenyuan

doi:doi:10.11648/j.ajwse.20210702.13

| Peer-Reviewed

Analysis of Riverbed Evolution of the Waigaoqiao Branch Channel of the Yangtze Estuary in Flood Period Under New Water and Sediment Conditions

Dai Wenyuan

Published in American Journal of Water Science and Engineering (Volume 7, Issue 2)

Received: 27 April 2021 Accepted: 8 May 2021 Published: 21 May 2021

Views: Downloads:

Download PDF

Share This Article

Twitter
Linked In
Facebook

Abstract

With the change of sediment conditions in the Yangtze River Estuary, the river regime evolution pattern has entered a new stage. The overall trend has changed from siltation to erosion, and the impact of the evolution trend of overall river regime on local river regime needs to be further studied. Based on the hydrological and topographic data of flood season in 2020, this paper analyzes the riverbed change of Waigaoqiao branch channel during flood period under new water and sediment conditions. The river bed evolution law and causes of scouring and silting are analyzed statistically. Result shows that the water depth of branch channel decreases with the influence of channel dredging and river regime change in South Harbour under new water and sediment condition. During the flood period of 2020, the Waigaoqiao branch channel generally presents a continuous silting situation, mainly located in the front of Waigaoqiao Wharf (phase IV). The increase of sediment concentration caused by the flood and the scouring of shoal along the upstream of the branch channel are the main reasons for the silting of the branch channel. Based on the actual needs of waterway operation and maintenance, this paper puts forward relevant countermeasures and suggestions according to the analysis results.

Published in	American Journal of Water Science and Engineering (Volume 7, Issue 2)
DOI	10.11648/j.ajwse.20210702.13
Page(s)	48-56
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2021. Published by Science Publishing Group

Keywords

New Water and Sediment Conditions, Flood, Yangtze River Estuary, Waigaoqiao Branch Channel, Riverbed Evolution

References

[1]	SUN Chao. Analysis of navigable risk and management countermeasures in Waigaoqiao waters. World Shipping, 2012, 35 (5): 22-25.
[2]	Jin Liu, Tan Zewei, Li Wenzheng, Yu Zhiying. Back silting in the Yangtze Estuary deepwater channel. China Harbour Construction, 2003 (04): 1-6.
[3]	Zhou Hai, Zhang Hua, Ruan Wei. Distribution of the maximum turbidity zone in the north channel of the Yangtze estuary before and after the implementation of the first phase of the deep-water channel regulation project and its influence on the sedimentation in the north channel. Journal of Sediment Research, 2005 (05): 58-65.
[4]	Tan Zewei, Fan Qijin, Zheng Wenyan, Zhu Jianfei. Analysis on the cause of backsilting in the north channel of the Changjiang Estuary. Water Transportation Engineering, 2009 (06): 91-102.
[5]	ZHOU Hai, JI Lan, YING Ming. The Yangtze Estuary Deepwater Channel Regulation Project with innovative design, resource saving, environment friendly and low carbon development. Water Transportation Engineering, 2012 (12): 46-53.
[6]	Zhu Bozhang, Fu Gui, Gao Min, Zhao Dezhao. Analysis of recent water and sediment movement and riverbed evolution in the Changjiang Estuary. Water Transportation Engineering, 2012 (7): 105-110.
[7]	Zhu Yuan, Luo Xiaofeng. Analysis of volume variation characteristics of nangang channel in the Changjiang estuary. Journal of Water Resources and Waterway Engineering, 2015 (4): 28-36.
[8]	Ying Ming, Ji Lan, Zhou Hai. Physical process of backsilting in 12.5m deep water channel of the north channel of the Yangtze Estuary. Water Transportation Engineering, 2017 (11): 77-85.
[9]	Zhang Zhilin, Hu Guodong, Zhu Peihua, Liao Jianying. The recent evolution of the south port in the Yangtze River estuary and its relationship with major projects. Resources and Environment in the Yangtze Basin, 2010, 19 (12): 1433-1441.
[10]	Shanghai Channel Survey and Design Institute Co., Ltd. Comprehensive Analysis Report on Deepening Research of Sediment Reduction Engineering Measures in the Third Stage of Yangtze Estuary Deepwater Channel Regulation Project. Shanghai: Shanghai Channel Survey and Design Research Institute Co., Ltd., 2008.
[11]	Shanghai Waterway Survey and Design Research Institute Co., Ltd. Annual Report of Coastal Waterway Depth Tracking Analysis in 2020. Shanghai: Shanghai Channel Survey and Design Research Institute Co., Ltd., 2020.
[12]	Xie Jianheng. Evolution and regulation of riverbed. Wuhan University Press, 2013.
[13]	Gao Min, Fan Qijin, Tan Zewei, Zheng Wenyan. Analysis and study of the diversion ratio in the north channel of the Changjiang Estuary. Water Transportation Engineering, 2009 (5): 82-86.
[14]	Liu Jie, Cheng Haifeng, Han Lu, Wang Zhenzhen. Interannual variation and causes of backsilting in 12.5 m deep waterway of the Changjiang Estuary. Advances in Water Science, 2019 (1): 65-75.
[15]	Ruan Wei, Ji Lan. Characteristics of waterway management combining regulation and dredging. Water Transportation Engineering, 2006 (01): 47-52.

Cite This Article

Plain Text BibTeX RIS

APA Style

Dai Wenyuan. (2021). Analysis of Riverbed Evolution of the Waigaoqiao Branch Channel of the Yangtze Estuary in Flood Period Under New Water and Sediment Conditions. American Journal of Water Science and Engineering, 7(2), 48-56. https://doi.org/10.11648/j.ajwse.20210702.13

Copy | Download

ACS Style

Dai Wenyuan. Analysis of Riverbed Evolution of the Waigaoqiao Branch Channel of the Yangtze Estuary in Flood Period Under New Water and Sediment Conditions. Am. J. Water Sci. Eng. 2021, 7(2), 48-56. doi: 10.11648/j.ajwse.20210702.13

Copy | Download

AMA Style

Dai Wenyuan. Analysis of Riverbed Evolution of the Waigaoqiao Branch Channel of the Yangtze Estuary in Flood Period Under New Water and Sediment Conditions. Am J Water Sci Eng. 2021;7(2):48-56. doi: 10.11648/j.ajwse.20210702.13

Copy | Download

@article{10.11648/j.ajwse.20210702.13,
  author = {Dai Wenyuan},
  title = {Analysis of Riverbed Evolution of the Waigaoqiao Branch Channel of the Yangtze Estuary in Flood Period Under New Water and Sediment Conditions},
  journal = {American Journal of Water Science and Engineering},
  volume = {7},
  number = {2},
  pages = {48-56},
  doi = {10.11648/j.ajwse.20210702.13},
  url = {https://doi.org/10.11648/j.ajwse.20210702.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajwse.20210702.13},
  abstract = {With the change of sediment conditions in the Yangtze River Estuary, the river regime evolution pattern has entered a new stage. The overall trend has changed from siltation to erosion, and the impact of the evolution trend of overall river regime on local river regime needs to be further studied. Based on the hydrological and topographic data of flood season in 2020, this paper analyzes the riverbed change of Waigaoqiao branch channel during flood period under new water and sediment conditions. The river bed evolution law and causes of scouring and silting are analyzed statistically. Result shows that the water depth of branch channel decreases with the influence of channel dredging and river regime change in South Harbour under new water and sediment condition. During the flood period of 2020, the Waigaoqiao branch channel generally presents a continuous silting situation, mainly located in the front of Waigaoqiao Wharf (phase IV). The increase of sediment concentration caused by the flood and the scouring of shoal along the upstream of the branch channel are the main reasons for the silting of the branch channel. Based on the actual needs of waterway operation and maintenance, this paper puts forward relevant countermeasures and suggestions according to the analysis results.},
 year = {2021}
}

Copy | Download

TY  - JOUR
T1  - Analysis of Riverbed Evolution of the Waigaoqiao Branch Channel of the Yangtze Estuary in Flood Period Under New Water and Sediment Conditions
AU  - Dai Wenyuan
Y1  - 2021/05/21
PY  - 2021
N1  - https://doi.org/10.11648/j.ajwse.20210702.13
DO  - 10.11648/j.ajwse.20210702.13
T2  - American Journal of Water Science and Engineering
JF  - American Journal of Water Science and Engineering
JO  - American Journal of Water Science and Engineering
SP  - 48
EP  - 56
PB  - Science Publishing Group
SN  - 2575-1875
UR  - https://doi.org/10.11648/j.ajwse.20210702.13
AB  - With the change of sediment conditions in the Yangtze River Estuary, the river regime evolution pattern has entered a new stage. The overall trend has changed from siltation to erosion, and the impact of the evolution trend of overall river regime on local river regime needs to be further studied. Based on the hydrological and topographic data of flood season in 2020, this paper analyzes the riverbed change of Waigaoqiao branch channel during flood period under new water and sediment conditions. The river bed evolution law and causes of scouring and silting are analyzed statistically. Result shows that the water depth of branch channel decreases with the influence of channel dredging and river regime change in South Harbour under new water and sediment condition. During the flood period of 2020, the Waigaoqiao branch channel generally presents a continuous silting situation, mainly located in the front of Waigaoqiao Wharf (phase IV). The increase of sediment concentration caused by the flood and the scouring of shoal along the upstream of the branch channel are the main reasons for the silting of the branch channel. Based on the actual needs of waterway operation and maintenance, this paper puts forward relevant countermeasures and suggestions according to the analysis results.
VL  - 7
IS  - 2
ER  -

Copy | Download

Author Information

Dai Wenyuan

Shanghai Port and Shipping Development Center, Shanghai, China

Download PDF

Sections

Plain Text BibTeX RIS

APA Style

Dai Wenyuan. (2021). Analysis of Riverbed Evolution of the Waigaoqiao Branch Channel of the Yangtze Estuary in Flood Period Under New Water and Sediment Conditions. American Journal of Water Science and Engineering, 7(2), 48-56. https://doi.org/10.11648/j.ajwse.20210702.13

Copy | Download

ACS Style

Dai Wenyuan. Analysis of Riverbed Evolution of the Waigaoqiao Branch Channel of the Yangtze Estuary in Flood Period Under New Water and Sediment Conditions. Am. J. Water Sci. Eng. 2021, 7(2), 48-56. doi: 10.11648/j.ajwse.20210702.13

Copy | Download

AMA Style

Dai Wenyuan. Analysis of Riverbed Evolution of the Waigaoqiao Branch Channel of the Yangtze Estuary in Flood Period Under New Water and Sediment Conditions. Am J Water Sci Eng. 2021;7(2):48-56. doi: 10.11648/j.ajwse.20210702.13

Copy | Download

@article{10.11648/j.ajwse.20210702.13,
  author = {Dai Wenyuan},
  title = {Analysis of Riverbed Evolution of the Waigaoqiao Branch Channel of the Yangtze Estuary in Flood Period Under New Water and Sediment Conditions},
  journal = {American Journal of Water Science and Engineering},
  volume = {7},
  number = {2},
  pages = {48-56},
  doi = {10.11648/j.ajwse.20210702.13},
  url = {https://doi.org/10.11648/j.ajwse.20210702.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajwse.20210702.13},
  abstract = {With the change of sediment conditions in the Yangtze River Estuary, the river regime evolution pattern has entered a new stage. The overall trend has changed from siltation to erosion, and the impact of the evolution trend of overall river regime on local river regime needs to be further studied. Based on the hydrological and topographic data of flood season in 2020, this paper analyzes the riverbed change of Waigaoqiao branch channel during flood period under new water and sediment conditions. The river bed evolution law and causes of scouring and silting are analyzed statistically. Result shows that the water depth of branch channel decreases with the influence of channel dredging and river regime change in South Harbour under new water and sediment condition. During the flood period of 2020, the Waigaoqiao branch channel generally presents a continuous silting situation, mainly located in the front of Waigaoqiao Wharf (phase IV). The increase of sediment concentration caused by the flood and the scouring of shoal along the upstream of the branch channel are the main reasons for the silting of the branch channel. Based on the actual needs of waterway operation and maintenance, this paper puts forward relevant countermeasures and suggestions according to the analysis results.},
 year = {2021}
}

Copy | Download

TY  - JOUR
T1  - Analysis of Riverbed Evolution of the Waigaoqiao Branch Channel of the Yangtze Estuary in Flood Period Under New Water and Sediment Conditions
AU  - Dai Wenyuan
Y1  - 2021/05/21
PY  - 2021
N1  - https://doi.org/10.11648/j.ajwse.20210702.13
DO  - 10.11648/j.ajwse.20210702.13
T2  - American Journal of Water Science and Engineering
JF  - American Journal of Water Science and Engineering
JO  - American Journal of Water Science and Engineering
SP  - 48
EP  - 56
PB  - Science Publishing Group
SN  - 2575-1875
UR  - https://doi.org/10.11648/j.ajwse.20210702.13
AB  - With the change of sediment conditions in the Yangtze River Estuary, the river regime evolution pattern has entered a new stage. The overall trend has changed from siltation to erosion, and the impact of the evolution trend of overall river regime on local river regime needs to be further studied. Based on the hydrological and topographic data of flood season in 2020, this paper analyzes the riverbed change of Waigaoqiao branch channel during flood period under new water and sediment conditions. The river bed evolution law and causes of scouring and silting are analyzed statistically. Result shows that the water depth of branch channel decreases with the influence of channel dredging and river regime change in South Harbour under new water and sediment condition. During the flood period of 2020, the Waigaoqiao branch channel generally presents a continuous silting situation, mainly located in the front of Waigaoqiao Wharf (phase IV). The increase of sediment concentration caused by the flood and the scouring of shoal along the upstream of the branch channel are the main reasons for the silting of the branch channel. Based on the actual needs of waterway operation and maintenance, this paper puts forward relevant countermeasures and suggestions according to the analysis results.
VL  - 7
IS  - 2
ER  -

Copy | Download