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| DOI：10.13522/j.cnki.ggps.2021426 |
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| Study on Reconstruction Parameters Optimization of West Sediment Canal in Weishan Irrigation Area of Lower Yellow River |
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BIAN Yanli, HUANG Fugui, CAO Huiti, WANG Juntao
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Water Diversion and Irrigation Engineering-technology Research Center, YRIHR, Zhengzhou 450003, China
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| Abstract: |
| The study on the parameters of the West sediment transport channel in Weishan Irrigation Area after the reconstruction of Weishan Yellow River diversion sluice is conducive to improving the water transmission and distribution capacity of the channel and ensuring the water use in the irrigation area. HEC-RAS Software was used to analyze the hydraulic factors of the west canal with different reconstruction schemes. The empirical formula of non- scouring and non-silting velocity and sediment carrying capacity were used to analyze the balance state of scouring and silting after the reconstruction of the west sediment canal. The relationship between water level and discharge and the scouring and silting state of the canal with different reconstruction schemes were studied and compared. After the reconstruction of Weishan Sluice, the design parameters of the supporting reconstruction of the main canal (West sediment canal) behind the sluice are as follows: the original trapezoidal section is reconstructed as a compound section, the excavation under the canal is 1.5 m, the design width of the shoal is 3 m, the gradient of the canal is reconstructed as 1/6 000 of the original gradient, and other design parameters of the project remain unchanged. The optimized reconstruction parameters have been applied to the west sediment transport channel in the Weishan irrigation area. |
| Key words: Weishan irrigation area; Weishan sluice; west sediment canal; reconstruction |
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