Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for predicting submerging characteristics of piano key weir
The invention provides a method for predicting the submerging characteristic of a key weir, and the method comprises the steps: 1, adjusting the opening degree of a tail gate at the downstream of a channel for multiple times under a fixed incoming flow condition after the upstream flow is adjusted to be stable, reducing the opening degree of the tail gate at a fixed opening degree interval each time, and enabling the downstream water level to rise, recording the upstream weir water head hu corresponding to different tail gate opening degrees and the tail water depth hd above the weir crest until the tail gate is completely closed; 2, according to the water head hu on the upstream weir and the tail water depth hd above the weir crest, the total water head Hu on the upstream weir and the total water head Hd on the downstream weir are calculated, delta Z/P, Hu/P and Hd/Hu are calculated, delta Z = Hu-Hd, and P is the weir height; 3, drawing a relation curve of delta Z/P and Hu/P; step 4, marking submerging coefficients Hd/Hu on all measurement points of the relation curve of delta Z/P and Hu/P to obtain a piano key weir submerging degree projection drawing; and step 5, obtaining the flowing property of the key weir according to the submerging degree projection drawing of the key weir. According to the method, the accurate description of the submerging effect of the key weir in the application of channels and rivers can be realized.
本发明提供一种预测琴键堰淹没特性的方法，包括：步骤1、当上游流量调节稳定后，在固定来流条件下，分多次调节渠道下游的尾门开度，每次以固定开度间隔减少尾门开度，使下游水位抬升，记录不同尾门开度对应的上游堰上水头hu和堰顶以上的尾水深度hd，直至尾门全部关闭；步骤2、根据上游堰上水头hu和堰顶以上的尾水深度hd，计算上游堰上总水头Hu和下游堰上总水头Hd，并计算ΔZ/P、Hu/P、Hd/Hu，ΔZ＝Hu‑Hd，P为堰高；步骤3、绘制ΔZ/P和Hu/P的关系曲线；步骤4、在ΔZ/P和Hu/P的关系曲线的所有测量点上标注淹没系数Hd/Hu，得琴键堰淹没度投影图；步骤5、根据琴键堰的淹没度投影图得到琴键堰的流动性质。本发明可以实现对琴键堰在渠道及河流应用中发生的淹没效应的准确描述。
Method for predicting submerging characteristics of piano key weir
The invention provides a method for predicting the submerging characteristic of a key weir, and the method comprises the steps: 1, adjusting the opening degree of a tail gate at the downstream of a channel for multiple times under a fixed incoming flow condition after the upstream flow is adjusted to be stable, reducing the opening degree of the tail gate at a fixed opening degree interval each time, and enabling the downstream water level to rise, recording the upstream weir water head hu corresponding to different tail gate opening degrees and the tail water depth hd above the weir crest until the tail gate is completely closed; 2, according to the water head hu on the upstream weir and the tail water depth hd above the weir crest, the total water head Hu on the upstream weir and the total water head Hd on the downstream weir are calculated, delta Z/P, Hu/P and Hd/Hu are calculated, delta Z = Hu-Hd, and P is the weir height; 3, drawing a relation curve of delta Z/P and Hu/P; step 4, marking submerging coefficients Hd/Hu on all measurement points of the relation curve of delta Z/P and Hu/P to obtain a piano key weir submerging degree projection drawing; and step 5, obtaining the flowing property of the key weir according to the submerging degree projection drawing of the key weir. According to the method, the accurate description of the submerging effect of the key weir in the application of channels and rivers can be realized.
本发明提供一种预测琴键堰淹没特性的方法，包括：步骤1、当上游流量调节稳定后，在固定来流条件下，分多次调节渠道下游的尾门开度，每次以固定开度间隔减少尾门开度，使下游水位抬升，记录不同尾门开度对应的上游堰上水头hu和堰顶以上的尾水深度hd，直至尾门全部关闭；步骤2、根据上游堰上水头hu和堰顶以上的尾水深度hd，计算上游堰上总水头Hu和下游堰上总水头Hd，并计算ΔZ/P、Hu/P、Hd/Hu，ΔZ＝Hu‑Hd，P为堰高；步骤3、绘制ΔZ/P和Hu/P的关系曲线；步骤4、在ΔZ/P和Hu/P的关系曲线的所有测量点上标注淹没系数Hd/Hu，得琴键堰淹没度投影图；步骤5、根据琴键堰的淹没度投影图得到琴键堰的流动性质。本发明可以实现对琴键堰在渠道及河流应用中发生的淹没效应的准确描述。
Method for predicting submerging characteristics of piano key weir
一种预测琴键堰淹没特性的方法
LI SHANSHAN (Autor:in) / LI GUODONG (Autor:in) / SHEN GUIYING (Autor:in)
19.04.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
G06Q
Datenverarbeitungssysteme oder -verfahren, besonders angepasst an verwaltungstechnische, geschäftliche, finanzielle oder betriebswirtschaftliche Zwecke, sowie an geschäftsbezogene Überwachungs- oder Voraussagezwecke
,
DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES
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E02B
HYDRAULIC ENGINEERING
,
Wasserbau
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