Comparative Study of Different Engineering Measures for Furcating-conflux Flow of Beiru River Section in the Middle Route of South-to-North Water Diversion Project
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Abstract:
The inundation areas between the Beiru River and Shi River and at the right side of the Shi River are at high risk of flooding due to low elevation. Construction of the main channel and river buildings in the Middle Route of South-to-North Water Diversion Project decreases the cross section of flood flowing area and therefore affects the flood flowing in the river with higher water level and longer inundation time in the upstream of river. The inundation depth of farmland and village increases in the upstream as well. In this paper, four different engineering measures for mitigating the inundation effects were compared based on the furcating-conflux flow characteristics of Beiru River, including the resettlement, river protection, river treatment, and combination of river protection and treatment. The results showed that the third measure is the best option in consideration of technical feasibility, economic optimization, and guarantee of people’s living standards to the maximum extent.