Abstract
At present, the traffic pressure of Nanchang city, the capital of Jiangxi province, is increasing. The increasing demand for the construction of river crossing channel requires strengthening the research on the flow characteristics of the tail reach of Ganjiang River where Nanchang is located. In this paper, the south section of Nanchang city at the tail end of Ganjiang River was taken as the research object. By applying the plane two-dimensional flow mathematical model as the technical means, and using the latest measured topographic and hydrological data in 2020 to verify the model, the flow movement characteristics of the studied river section were calculated and analysed. The results show that the water surface gradient is slow, the flow field is smooth, the flow velocity is small, and the sediment is easy to deposit in this reach, which is easy to threaten the flood control of the river section.
Highlights
Nanchang, the capital city of Jiangxi Province, is located at the end of Ganjiang River
There is only one river crossing channel of Shengmi Bridge in the south of the city, and the traffic supply across the river in the south of the city is far lower than the traffic demand across the river
Based on a flatten two-dimensional flow mathematical model, the flow characteristics of Nanchang reach at the tail end of Ganjiang River was calculated and analysed in this paper, which will provide technical support for the construction of river crossing bridges in the south of Nanchang city
Summary
The capital city of Jiangxi Province, is located at the end of Ganjiang River. There is only one river crossing channel of Shengmi Bridge in the south of the city, and the traffic supply across the river in the south of the city is far lower than the traffic demand across the river (see Figure 1). With the rapid development of Jiulong lake, Liantang and other groups in the future [1], the demand for river crossing travel in the south of the city will increase rapidly. Based on a flatten two-dimensional flow mathematical model, the flow characteristics of Nanchang reach at the tail end of Ganjiang River was calculated and analysed in this paper, which will provide technical support for the construction of river crossing bridges in the south of Nanchang city
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