龙抬头

龙抬头明流泄洪洞反弧段下游边墙防蚀探讨

Study on Cavitation-protection for Downstream Sidewalls of Ogee-section in Spillway Tunnels

龙抬头式泄洪洞水流数学模型及其应用

A numerical model for spillway tunnel flow and its application

用流线迭代法计算龙抬头泄洪洞反弧流场

Calculation of Flow Field of Flood Tunnel Bucket with Streamline Iteration Method

通过设置掺气设施，大多数龙抬头泄洪洞都较好地防止了空蚀破坏。

The cavitation damage is prevented effectively in many spillway dragon-raise-head tunnels by aeration facility .

高水头龙抬头泄洪洞掺气减蚀试验研究及数值模拟

Model Test and Turbulence Numerical Simulation on the Dragon-Raise-Head Free Flow Spillway Tunnel with High Head

贵州龙宫龙抬头

Dragon Palace In GuiZhou Waking Up

大中河水库导流泄洪洞龙抬头试验研究

Test and Study of Ski-jump Energy Dissipator of Diversion and Spillway Tunnels for Large and Medium River Reservoirs

云龙水库导流泄洪洞龙抬头接合段有限元动力分析

The Finite Element Dynamic Analysis of the Diversion Spillway Tunnel Flip Bucket Joint Section of Yunlong Water Reservoir

对紫坪铺水利工程1泄洪洞龙抬头段与前期导流洞交叉重叠段在施工开挖阶段围岩及支护结构的强度与变形稳定性进行了有限元数值仿真分析和优化设计。

The numerical simulation analysis and optimal design for the intersection of diversion tunnel and discharge tunnel are conducted .

过了龙抬头这天，雨水充沛，所以这天被称为春龙界。

After that day , there will be more and more rain , so that day is also called Spring Dragon Day .

中国北方的农民深信龙抬头后雨水充足这事，到时粮仓无论大小都会装满粮食。

Most Chinese northern farmers believe that with the help of that day , all stores , big and small , will be full of grain .

在中国，龙抬头是个吉祥的日子，俗话说“龙不抬头，天不下雨”，龙是祥瑞之物，又是和风化雨的主宰。

Chinese folklore says that every second day of the second lunar month is the time when the dragon in charge of the rain lifts its head .

提出可以用泄洪洞作用水头、反弧末端平均流速及反弧段水流空化数等3项水力特性的界限值，作为判别龙抬头式泄洪洞反弧段是否会发生空蚀的水力特性标准。

Three hydraulic characteristic limit values of the head , velocity and cavitation index at the bucket of tunnel spillway are provided , which are used as discriminating standard of cavitation standard .

二月二是我国民间重要的传统节日，文章运用文献材料，对二月二习俗的流变进行了分析，并浅析了龙抬头节、社日的形成，希冀能够推动学术界对传统节日文化研究的进展。

" February two " is one of the important tradition folk festivals . With documentary materials , the " February two " custom is analyzed in order to advance the research work of traditional festivals .

本文通过对┓型龙抬头试验研究、验证了避免水流急剧变化而产生空蚀的较有效的方法是：缩小中间闸门井的过流断面。

The test and verification of the Z-shaped ski-jump energy dissipator has proved that the reduction of the overflowing cross section of the middle gate shaft is an effective means to avoid cavitation that may be caused due to rapid variation of water flow .