Conference proceeding
Baffle Drop Structures for Diversion of Storm Water to Underground Tunnels
PROCEEDINGS OF THE 35TH IAHR WORLD CONGRESS, VOLS I AND II, pp.1026-1034
01/01/2013
Abstract
A baffle-drop structure is a flow conveyance structure that can be used for transport of urban storm water down to underground storage tunnels. The water cascades down the structure from baffle to baffle and plunges into a pool at the bottom from where it is conveyed to the tunnel via an adit. The structure has been used successfully in a number of urban drainage schemes for design discharges up to about 4.2 m(3)/s (150 ft(3)/s). Using a series of laboratory experiments, an analysis has been tested and validated that may be used for design of structures for larger design discharges. The analysis provides a dimensionless relationship between key variables, including design discharge, shaft diameter, baffle spacing, and position of a vertical wall that divides the shaft into dry and wet portions. The laboratory studies showed that by using this relationship the shaft can be designed to maintain atmospheric pressure throughout its height with little or no air being entrained into the tunnel. The laboratory results are compared with performance data from the (limited number of) structures already in service.
Details
- Title: Subtitle
- Baffle Drop Structures for Diversion of Storm Water to Underground Tunnels
- Creators
- A. Jacob Odgaard - Univ Iowa, Coll Engn, Iowa City, IA 52242 USATroy C. Lyons - Univ Iowa, IIHR Hydrosci & Engn, Engn Serv, Iowa City, IA 52242 USAAndrew J. Craig - Univ Iowa, IIHR Hydrosci & Engn, Iowa City, IA 52242 USAAnthony Margevicius - URS Corp, Cleveland, OH 44115 USADavid Servidio - Hatch Mott MacDonald, Cleveland, OH 44135 USA
- Contributors
- W Zhaoyin (Editor)JHW Lee (Editor)G Jizhang (Editor)C Shuyou (Editor)
- Resource Type
- Conference proceeding
- Publication Details
- PROCEEDINGS OF THE 35TH IAHR WORLD CONGRESS, VOLS I AND II, pp.1026-1034
- Publisher
- Tsinghua Univ
- Number of pages
- 9
- Language
- English
- Date published
- 01/01/2013
- Academic Unit
- IIHR--Hydroscience and Engineering; Civil and Environmental Engineering
- Record Identifier
- 9984638356202771
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