黄河下游位山灌区西输沙渠配套改造参数优化研究

卞艳丽; 黄福贵; 曹惠提; 王军涛

引用本文:	卞艳丽,黄福贵,曹惠提,等.黄河下游位山灌区西输沙渠配套改造参数优化研究[J].灌溉排水学报,2022,41(S1):44-51.
	BIAN Yanli,HUANG Fugui,CAO Huiti,et al.黄河下游位山灌区西输沙渠配套改造参数优化研究[J].灌溉排水学报,2022,41(S1):44-51.

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黄河下游位山灌区西输沙渠配套改造参数优化研究
卞艳丽，黄福贵，曹惠提，王军涛
黄河水利科学研究院引黄灌溉工程技术研究中心，郑州 450003

摘要:

研究位山引黄闸改建后位山灌区西输沙渠配套改造参数，有利于提高渠道输配水能力，保障灌区用水。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1.5 m，浅滩设计宽度3 m，渠道比降按原比降1/6 000改造，工程其他设计参数不变。优化后的改造参数已在位山灌区西输沙渠上得到应用。

关键词: 位山灌区；位山闸；西输沙渠；改造

DOI：10.13522/j.cnki.ggps.2021426

分类号:

基金项目:

Study on Reconstruction Parameters Optimization of West Sediment Canal in Weishan Irrigation Area of Lower Yellow River

BIAN Yanli, HUANG Fugui, CAO Huiti, WANG Juntao

Water Diversion and Irrigation Engineering-technology Research Center, YRIHR, Zhengzhou 450003, China

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