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 eLibrary
spacer.gif eLibrary
You are here : eLibrary : IAHR World Congress Proceedings : 34th Congress - Brisbane (2011) : THEME 4: Responding to Shifting Water Resources : Extension of siphon operation range
Extension of siphon operation range
Author : C. Mateos1 , V. Elviro2 , D. Cordero2 and T. Ramos1
Conventional siphons are rarely used as outlet works in dams owing to their full or zero flow only characteristic. Earlier papers have demonstrated that it is possible to construct gradual and/or adjustable siphons without this inconvenience. A further possibility is analyzed which is that they can be designed to enter service for reservoir levels below the siphons threshold. In this way should operation of a reservoir require lowering of the water level to generate a flood storage volume, the usefulness of this new outlet structure (the siphon) is clear and satisfies four conditions:
- It begins to operate at lower levels that the normal outlet discharge;
- In the rising phase of a flood, the outlet discharge can never be more than the incoming flow;
- The discharge rule can be preset such that the variation of discharges can be as abrupt or as gradual as desired;
- Even during a flood the regulation can be altered easily to increase or reduce the discharge capacity
File Size : 1,540,757 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 34th Congress - Brisbane (2011)
Article : THEME 4: Responding to Shifting Water Resources
Date Published : 01/07/2011
Download Now