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2018—2019年引黄入冀补淀工程沉沙池运行效果分析

2021-12-17袁榆梁应乃武张文虎计炳生刘香君陈萌

人民黄河 2021年12期

袁榆梁 应乃武 张文虎 计炳生 刘香君 陈萌

摘 要:引黄入冀补淀工程对雄安新区水资源供给有重要作用,其沉沙池的运行效果直接影响工程的正常运行。根据2018—2019年泥沙监测断面所测含沙量数据,综合分析清池周期、沉沙率、来沙系数和输沙率的变化规律,发现沉沙池的沉沙率为95.56%,远高于80%~85%的设计标准;沉沙池来沙量为81.7万t、沉沙78.07万t,沉沙效果较好;沉沙池淤满时间约为3.6 a,清池周期适中,使用效果较好。

关键词:沉沙池;含沙量;运行效果;引黄入冀补淀工程

中图分类号:TV146

文献标志码:A

doi:10.3969/j.issn.1000-1379.2021.12.025

引用格式:袁榆梁,应乃武,张文虎,等.2018—2019年引黄入冀补淀工程沉沙池运行效果分析[J].人民黄河,2021,43(12):128-130.

Abstract: The Yellow River-to-Baiyangdian Water Transfer Project plays an important role in ensuring the supply of water resources in the Xiongan New Area, and the operation effect of the settling basin directly affects the normal operation of the project. Based on the data of sediment concentration measured in the sediment monitoring section from 2018 to 2019, a comprehensive analysis of the variation rules of basin clearing cycle, sediment settling rate, sediment inflow coefficient and sediment transport rate shows that the sediment settling rate of the basin is 95.56%, which is much higher than the design standard of 80%-85%. The sediment amount of settling basin is 817 000 tons and settling sediment is 780 700 tons, and the settling effect is good. The sedimentation basin will be filled up in 3.6 years, the cleaning cycle is moderate, and the use effect is fine.

Key words: sedimentation basin; sediment concentration; operation effect; Yellow River-to-Baiyangdian Water Transfer Project

引黃入冀补淀工程作为国务院确定的节水供水重大水利工程,是国家战略工程,也是保障雄安新区建设对白洋淀水位、水量要求的最重要、最有效的外流域调水工程。该工程通水后,不仅可以有效改善白洋淀和雄安新区的生态环境,还将大力缓解河北省中南部地区农业严重缺水矛盾,为当地经济社会发展注入强劲活力。为保障工程良好运行,需要对沉沙池的运行效果进行分析,该工程规模大、涉及内容多,许多学者开展了大量研究:胡松可等[1]指出来水流量影响沉沙率,华根福等[2]提出了计算沉沙池泥沙沉降率时把沉沙池工作段分为若干个间距较小的计算池段,王开拓等[3]给出了沉沙率计算公式,贾艳霞等[4]指出了沉沙池的沉沙率与沉沙池尺寸的关系及沉沙池的尺寸与沉沙粒径的关系,他们都提到沉沙率但未给出明确的概念。……

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