呼图壁河渠首工程水库泄空冲沙研究

发布时间：2018-04-08 21:28

本文选题：模型试验　切入点：溯源冲刷　出处：《人民黄河》2017年05期

【摘要】：对于多沙河流上水库的排沙方法,前人已有较多研究,但通过模型试验来模拟水库高淤积后的排沙研究较少。通过水工动床模型试验,对呼图壁河渠首拟建水库高淤积状态下的泄空冲沙进行了研究,根据冲淤前后的断面变化情况,对泄空冲沙过程中的溯源冲刷和沿程冲刷进行了分析,找出了泄空冲沙的规律及运用原则。通过对泥沙冲淤的数值分析,建立了溯源冲沙的概化图形,推导出了一套适合该水库的泄空冲沙公式。经验证,建立的泄空冲沙公式可以用于呼图壁河渠首工程水库排沙形态预测及排沙量的估算。
[Abstract]:There have been many researches on sediment discharge methods of reservoirs on sandy rivers, but there are few researches on simulating sediment discharge after high siltation of reservoirs by model test.Based on the model test of hydraulic moving bed, the emptying and scouring of the proposed reservoir in the head of the Hutubi River Canal is studied. According to the change of the section before and after scouring and silting, the traceability of scour and the scour along the course of emptying are analyzed.The rule and application principle of sand discharge are found out.Based on the numerical analysis of sediment scouring and siltation, the generalizable pattern of traceability of scour sediment is established, and a set of formula for emptying sediment from the reservoir is deduced.It is verified that the established formula can be used to predict the sediment discharge form and estimate the sediment discharge amount in the reservoir of Hutu River Channel head Project.
【作者单位】：河南省豫北水利勘测设计院;新疆农业大学水利与土木工程学院;
【基金】：新疆维吾尔自治区水利水电工程重点学科资助项目(XJZDXK-2002-10-05)
【分类号】：TV145

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