| 摘要: |
| 利用HEC-RAS软件对不同改造方案的西输沙渠开展水力要素分析，采用不冲不淤流速和水流挟沙能力经验公式分析西输沙渠配套改造后的冲淤平衡状态，研究对比不同改造方案的水位流量关系和渠道冲淤状态，分析提出位山引黄闸改建后闸后干渠（西输沙渠）配套改造设计参数如下：将原梯形断面按复式断面进行改造设计，渠底下挖1.5m，浅滩设计宽度3m，渠道比降按原比降1/6000改造，工程其它设计参数不变。 |
| 关键词: 位山灌区；位山闸；西输沙渠；改造 |
| DOI： |
| 分类号:S273 |
| 基金项目:国家重点研发计划项目“国家水资源动态评估关键技术与应用（2018YFC0407700）”课题“水资源动态情势研判与决策支持（2018YFC0407705）”专题项目“黄河水资源动态评价关键技术示范应用” |
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| Study on Reconstruction Parameters Optimization of West Sediment Canal in Weishan Irrigation Area of Lower Yellow River |
|
bianyanli
|
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Water Diversion and Irrigation Engineering-Technology Research Center, YRIHR
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| Abstract: |
| HEC-RAS Software is 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 is 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 are 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 1.5m, the design width of the shoal is 3m, the gradient of the canal is reconstructed as 1/6000 of the original gradient, and other design parameters of the project remain unchanged. |
| Key words: Weishan Irrigation area; Weishan sluice; west sediment canal; reconstruction |
