IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
Log On
About IAHRDirectoryCommitteesMy IAHRNews & JournalseLibraryeShopEventsJoin IAHRWorld CongressDonate
spacer.gif
spacer.gif eLibrary
spacer.gif eLibrary
You are here : eLibrary : IAHR World Congress Proceedings : 33rd Congress - Vancouver (2009) : Topic B: Water Engineering in Support of Built Environments : Experimental study on the drop shaft spillway reconstructed from diversion tunnel
Experimental study on the drop shaft spillway reconstructed from diversion tunnel
Author : Sun shuangke, Xu tibing, Xia qingfu, Sun gaosheng, Xie weidong
The Dashimen Hydroelectric Power Station, of which the dam height is 63.78m, is a multi-purpose project concerning the industry water supply, power generation, and flood control. The drop shaft spillway is only one outlet structure of this project and has a special conformation reconstructed from diversion tunnel, its maximum flow capacity is about 148m3/s. In this paper, hydraulic model test is carried out to study the hydraulic characteristics of this spillway and optimize the layout of stilling well. It is indicated that the spillway is safer than traditional spillway with the wall pressing flow since the sudden enlargement configuation under the circular intake can induce supercavitating flow in the vertical shaft. Otherwise, this spillway has high energy dissipation due to the full-developed aerated flow and optimized layout of stilling well. The damping ratio is above 83.1%~91.6%.
File Size : 451,600 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 33rd Congress - Vancouver (2009)
Article : Topic B: Water Engineering in Support of Built Environments
Date Published : 09/08/2009
Download Now