STUDY AND ITS APPLICATIONS OF 1D AND 2D FLOW MATHEMATICAL MODELS FOR TGP'S 3rd-STAGE OPEN CHANNEL CLOSURE

机译：三峡工程三期开放式通道关闭的一维和二维流动数学模型的研究及其应用

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The TGP's 3rd-Stage Open Channel Closure is characterized by large closure discharge, large closure drop, and high gap velocity. In order to carry out the construction of open channel closure successfully, 1D and 2D flow mathematical models are developed and closely integrated in this paper. The overflowing discharge of the open channel and water drops shared by the upstream and downstream cofferdams can be calculated through using 1D flow model, and the detailed hydraulic conditions in the open channel can be simulated through using 2D flow model. Then the water-drop distribution relationships between two closure cofferdams are analyzed under different gap widths by using these models. Calculated results indicate that the current advancing scheme is inapplicable with the closure discharge of 12200 m~3/s, and it is very favorable for constructing with the closure discharge of 9010m~3/s.

机译：TGP的第三阶段明渠关闭的特点是关闭流量大，关闭落差大，间隙速度高。为了成功进行明渠封闭的建设，本文建立并紧密集成了一维和二维流动数学模型。可以通过一维流动模型来计算明渠的溢流流量和上游，下游围堰共享的水滴，并且可以使用二维流动模型来模拟明渠中的详细水力条件。然后利用这些模型分析了在不同间隙宽度下两个封闭围堰之间的水滴分布关系。计算结果表明，目前的推进方案不适用于12200 m〜3 / s的封闭流量，对于9010m〜3 / s的封闭流量施工非常有利。

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来源
《International Conference on Hydroinformatics 2004(HIC2004) vol.1; 20040621-24; Singapore(SG)》|2004年|P.150-159|共10页
会议地点 Singapore(SG)
作者
JUNQIANG XIA; GUANGQIAN WANG; HOUGUI ZHOU;
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作者单位

Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, China;

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正文语种 eng
中图分类水利工程基础科学;
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STUDY AND ITS APPLICATIONS OF 1D AND 2D FLOW MATHEMATICAL MODELS FOR TGP'S 3rd-STAGE OPEN CHANNEL CLOSURE

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