| 引用本文: | 查映东,侯 鹏,刘泽元,等.斜管布置形式对沉沙池沉积黄河泥沙的影响[J].灌溉排水学报,2023,42(8):127-135. |
| ZHA Yingdong,HOU Peng,LIU Zeyuan,et al.斜管布置形式对沉沙池沉积黄河泥沙的影响[J].灌溉排水学报,2023,42(8):127-135. |
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| 摘要: |
| 【目的】探究斜管在沉沙池内的最优布置形式，提升黄河泥沙去除效果。【方法】针对重力式斜管沉沙池，设置了单层（Fs）、双层（Fv1、Fv2）3种斜管布置形式，应用黄河上游段（Su）、中游段（Sm）、下游段（Sd）3种典型粒径泥沙的配水，在2种运行流量（Qq、Qs）下开展原型沉沙试验，对比分析3种斜管布置形式对不同黄河泥沙的沉降效果。【结果】大颗粒泥沙进入斜管前已发生沉降，斜管主要对细颗粒泥沙（d<75 μm）进行沉降，其有效控制出口泥沙量为0.342~1.354 kg/m3，有效控制出口砂粒量为0~0.018 kg/m3；不同斜管布置形式下，出口泥沙及相关砂粒、粉粒、黏粒量均以Fv2斜管布置形式最低，Fv1、Fs斜管布置形式依次次之；其中Fv2斜管布置形式有效控制出口泥沙量为0.342~0.991 kg/m3，较Fv1、Fs斜管布置形式分别减少了10.01%~20.95%、26.82%~38.83%；不同黄河水出口泥沙及相关砂粒量、粉粒量、黏粒量均以Su黄河水最低，Sm、Sd黄河水依次次之。【结论】3种斜管布置形式不同黄河泥沙处理能力存在明显差异（P<0.05），表现为V形斜管布置形式优于常规斜管布置形式，并且以倾角60°、45°的Fv2斜管布置形式最佳。 |
| 关键词: 黄河泥沙；沉沙池；斜管；斜管布置形式 |
| DOI：10.13522/j.cnki.ggps.2023040 |
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| The Impact of Pipe Inclination on Sediment Deposition at the Sedimentation Basin in the Yellow River |
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ZHA Yingdong, HOU Peng, LIU Zeyuan, WANG Keyuan, LI Yunkai, WANG Chunxia
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1. College of Water Conservancy & Architectural Engineering, Shihezi University, Shihezi 832000, China;
2. College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China
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| Abstract: |
| 【Objective】 This paper aims to study the optimal layout of inclined pipes in sedimentation basins in attempts to improve sediment removal efficiency in the Yellow River. 【Method】Three different layouts of inclined pipes were compared: a single layer (Fs), and two double-layer layouts (Fv1, Fv2), in a gravity-operated sedimentation basin. Sediment distribution of three typical particle sizes in the upstream (Su), middle stream (Sm), and downstream (Sd) was measured. Sediment tests were conducted under a low (Qq) and a high (Qs) flow rate to compare the impact of pipe inclination on sedimentation in the three layouts. 【Result】The large granular sediment settled prior to entering the inclined pipes, while the fine particle sediment (<75 μm) was effectively captured by the inclined pipe. These resulted in an outlet sediment content of 0.342~1.354 kg/m3 and a sand content of 0~0.018 kg/m3. Among the different inclined pipe layouts, Fv2 exhibited the lowest sediment and related sand, silt, and clay content at the outlet, followed by Fv1 and Fs. The Fv2 effectively controlled the outlet sediment content at 0.342~0.991 kg/m3, showing a reduction of 10.01%~20.95% and 26.82%-38.83%, compared to Fv1 and Fs, respectively. Furthermore, different Yellow River sections showed variations in sediment content, with the Su section exhibiting the lowest sediment and related sand, silt, and clay content. 【Conclusion】The sediment treatment capacity varied significantly among the three inclined pipe layouts for different Yellow River sediments (P<0.05). The V-shaped inclined pipe layout was superior to the conventional layout, with the Fv2 (inclination angles of 60° and 45°) being most effective. |
| Key words: Yellow River sediment; sediment basin; inclined pipe; inclined pipe layout form |
