都安红渡作业区码头工程对河道防洪的影响分析
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摘要
为分析都安红渡作业区码头工程建设后对其所在河段的行洪影响,本文建立了其所在河段的二维水流数值模型,对比分析不同工况下工程建设前后河道水文情势的变化情况。经计算,工程建成后,河道水位变化幅度在-0.077 m～0.049 m之间,水位受影响范围不超过码头上游1100 m至下游500 m;码头附近流速变化幅度在-0.84 m/s～0.24 m/s,在200 m左右的范围内其变化量即迅速消减至0.1 m/s以下。结果表明:红渡作业区码头的修建对其所在河段行洪和河势影响不大。为工程建设提供决策依据。
In order to analyze the influence of flood control on the river section of Duanhongdu operation area after construction, this paper establishes a two-dimensional flow numerical model of the river section where it is located, and compares and analyzes the hydrological situation of river channel before and after construction under different working conditions. It is calculated that after the completion of the project, the water level of the river will vary from-0.077 m to0.049 m, and the water level will not exceed the upstream of the terminal from 1100 m to 500 m downstream; the flow velocity near the terminal will vary from-0.84 m/s to 0.24 m/s. In the range of about 200 m, the amount of change is rapidly reduced to less than 0.1 m/s. The results show that the construction of the pier in the Red Cross operation area has little effect on the flooding and river regime of the river section. Provide decision-making basis for engineering construction.
In order to analyze the influence of flood control on the river section of Duanhongdu operation area after construction, this paper establishes a two-dimensional flow numerical model of the river section where it is located, and compares and analyzes the hydrological situation of river channel before and after construction under different working conditions. It is calculated that after the completion of the project, the water level of the river will vary from-0.077 m to0.049 m, and the water level will not exceed the upstream of the terminal from 1100 m to 500 m downstream; the flow velocity near the terminal will vary from-0.84 m/s to 0.24 m/s. In the range of about 200 m, the amount of change is rapidly reduced to less than 0.1 m/s. The results show that the construction of the pier in the Red Cross operation area has little effect on the flooding and river regime of the river section. Provide decision-making basis for engineering construction.
引文
[1]尹章昭,高柱,陈辉,戴会超,石小涛,王煜.某H码头工程建设对长江行洪影响分析[J].三峡大学学报(自然科学版),2016,38(01):6-10.