| 基于输水隧洞泵送混凝土管道的冲蚀机理 |
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| 引用本文： | 梁爽,南轩,陆金才,丁红春,黄剑峰.基于输水隧洞泵送混凝土管道的冲蚀机理[J].科学技术与工程,2020,20(1):34-37. |
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| 作者姓名： | 梁爽 南轩 陆金才 丁红春 黄剑峰 |
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| 作者单位： | 云南农业大学水利学院,昆明 650201;云南农业大学建筑工程学院,昆明 650201;中国水利水电第十四工程局有限公司勘察设计研究院,昆明650051 |
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| 基金项目： | 国家自然科学基金项目（51541913） |
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| 摘 要： | 采用数值模拟方法对龙开口水电站1号输水隧洞混凝土泵送过程中管道冲蚀磨损问题进行研究。利用DPM离散相模型分析泵送管道的冲蚀磨损机理,结合1号隧洞实际泵送混凝土的情况来验证数值模型是否正确。通过模拟结果从整个管道固相体积分数分布与弯管出口处的压强变化等特征理解其内在的多相流动规律。模拟得到的弯管最大冲蚀磨损部位,与实际泵送过程中的磨损部位吻合较好。说明DPM冲蚀模型能准确预测泵送管道的磨损特性,可为类似的泵送混凝土施工提供有益参考。
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| 关 键 词： | 输水隧洞 泵送管道 冲蚀 数值模拟 |
| 收稿时间： | 2019/5/7 0:00:00 |
| 修稿时间： | 2019/9/23 0:00:00 |
Study on erosion mechanism of concrete pipeline pumped by water conveyance tunnel |
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| Liang Shuang,Nan Xuan,Lu Jincai,Ding Hongchun,Huang Jianfeng.Study on erosion mechanism of concrete pipeline pumped by water conveyance tunnel[J].Science Technology and Engineering,2020,20(1):34-37. |
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| Authors: | Liang Shuang Nan Xuan Lu Jincai Ding Hongchun Huang Jianfeng |
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| Institution: | College of water conservancy,Yunnan Agricultural Univ,Kunming China,architectural engineering institute,Yunnan Agricultural Univ,,, |
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| Abstract: | The problem of erosion and wear in the concrete pumping process of no. 1 tunnel of longkaikou hydropower station is studied by numerical simulation. DPM discrete phase model was used to analyze the erosion and wear mechanism of the pumping pipeline, and the correctness of the numerical model was verified by combining with the actual pumping concrete situation of no. 1 tunnel. Through the simulation results, the internal law of multiphase flow is understood from the distribution of solid phase volume fraction and the pressure change at the outlet of the bend. The simulated maximum erosive wear position of the elbow is in good agreement with that in the actual pumping process. It is shown that DPM erosion model can accurately predict the wear characteristics of pumping pipes, and can provide useful reference for similar pumping concrete construction |
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| Keywords: | water tunnel pumping pipe erosion numerical simulation |
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