A preliminary study on the navigation capacity improvement of the Yangtze River Waterway based on the joint dispatching optimization of the upstream reservoir group

The Yangtze River, which has the largest freight volume in the world, is a golden waterway of most importance in China. But there are still some sections with poor navigation standards that impede the potential of the channel from being fully exploited. This paper aims to investigate the possibility of navigation capacity improvement through the joint dispatching optimization of the controlled reservoir group in the upper Yangtze River. The construction and operation situations of the controlled reservoir group are introduced, and the contribution of the current joint dispatching scheme to the Yangtze River Waterway is then analysed. Based on the growing demand for inland water transportation, the possibility of navigation capacity improvement through the joint dispatching optimization is further investigated. The results show that the channel dimension of Yibin-Chongqing and Yichang-Chenglingji section has improved to a certain degree under the current joint dispatching mode, further promotion is possible through the optimization of joint dispatching for those years when the amount of suppliable water during dry seasons is much greater than the shipping demand. Policy suggestions on joint dispatching are finally proposed.

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Study on the Influence of Reservoir Dispatch of the Upper Yangtze River on the Runoff Control

E3S Web of Conferences ◽

10.1051/e3sconf/202128301030 ◽

2021 ◽

Vol 283 ◽

pp. 01030

Author(s):

Tang Bing ◽

Wang WenChao ◽

Fan Xiaozhi

Keyword(s):

Saltwater Intrusion ◽

Yangtze River ◽

River Estuary ◽

Yangtze River Estuary ◽

Water Quantity ◽

The Yangtze River ◽

Upper Yangtze River ◽

The Yangtze River Estuary ◽

Upstream Reservoir ◽

The Upper Yangtze River

The reservoir group focusing on the Three Georges reservoir has been established in the upper Yangtze River, with a total regulation capacity of 51.5 billion m3. The reservoir group dispatch plays an important role in regulating the runoff. Economic activity in the Yangtze River estuary poses high requirements for water resources security. The water quality of main water supply reservoirs is influenced by the saltwater intrusion. The upstream reservoir group dispatch can enhance sea inlet runoff and mitigate saltwater intrusion hazard. In order to clarify the upstream reservoir group’s influence on the sea inlet water quantity in the Yangtze River estuary, the author designed three typical reservoir group dispatch scenarios to analyze flow rate change and different dispatch scenarios of Datong section. According to the findings, the upstream reservoir group dispatch is important to secure water quantity in the dry season. Through normal dispatch, the Three Georges reservoir can cut the days with a flow rate less than 100 million m3/s from 50.6 days to 8.8 days. In the special dry year, the sole emergency water supplement by the Yangtze River reservoir to the estuary will exert influence on the reservoir power generation. The joint operation of upstream reservoir group can basically eliminate such influence.

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A primary study on sediment issues due to ahead impounding water of the cascade reservoirs in the upper Yangtze River

Advances in Earth and Environmental Sciences ◽

10.2495/icesep130481 ◽

2013 ◽

Author(s):

Renyong Huang ◽

Jie Zhang

Keyword(s):

Yangtze River ◽

Primary Study ◽

Cascade Reservoirs ◽

Upper Yangtze River ◽

The Upper Yangtze River

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Length-weight relationships for five endemic fish species in the upper Yangtze River basin, China

Journal of Applied Ichthyology ◽

10.1111/jai.12824 ◽

2015 ◽

Vol 31 (5) ◽

pp. 961-962

Author(s):

L. Li ◽

H. Du ◽

L. Ren ◽

J.M. Wu ◽

Q.W. Wei

Keyword(s):

River Basin ◽

Fish Species ◽

Yangtze River ◽

Yangtze River Basin ◽

Upper Yangtze River ◽

Endemic Fish ◽

The Upper Yangtze River

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A Spatiotemporal Statistical Method of Ship Domain in the Inland Waters Driven by Trajectory Data

Journal of Marine Science and Engineering ◽

10.3390/jmse9040410 ◽

2021 ◽

Vol 9 (4) ◽

pp. 410

Author(s):

Fan Zhang ◽

Xin Peng ◽

Liang Huang ◽

Man Zhu ◽

Yuanqiao Wen ◽

...

Keyword(s):

Statistical Method ◽

Yangtze River ◽

Domain Size ◽

Inland Waters ◽

The Yangtze River ◽

Trajectory Data ◽

Different Types ◽

Dry Seasons ◽

Ship Collision ◽

Shape And Size

In this study, a method for dynamically establishing ship domain in inland waters is proposed to help make decisions about ship collision avoidance. The surrounding waters of the target ship are divided to grids and then calculating the grid densities of ships in each moment to determine the shape and size of ship domain of different types of ships. At last, based on the spatiotemporal statistical method, the characteristics of ship domains of different types of ship in different navigational environments were analyzed. The proposed method is applied to establish ship domains of different types of ship in Wuhan section of the Yangtze River in January, February, July, and August in 2014. The results show that the size of ship domain increases as the ship size increases in each month. The domain size is significantly influenced by the water level, and the ship domain size in dry seasons is larger than in the wet seasons of inland waters.

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