 |
Dropshaft Cascades in Roman Aqueducts
Chanson, Hubert (1999). Dropshaft Cascades in Roman Aqueducts. In: , Proceedings of 28th IAHR Congress. 28th IAHR Congress, Graz, Austria, (). August, 1999.
|
|
| |
| Attached Files (Some files may be inaccessible until you login with your UQ eSpace credentials) |
| Name |
Description |
MIMEType |
Size |
Downloads |
iahr99_3.pdf
|
iahr99_3.pdf |
application/pdf |
83.55KB |
506 |
| Author(s) |
Chanson, Hubert
|
| Title of paper |
Dropshaft Cascades in Roman Aqueducts
|
| Conference name |
28th IAHR Congress
|
| Conference location |
Graz, Austria
|
| Conference dates |
August, 1999
|
| Proceedings title |
Proceedings of 28th IAHR Congress
|
| Place published |
Graz, Austria
|
| Publisher |
Technical University Graz
|
| Publication date |
1999
|
| Volume number |
B12
|
| Total pages |
6
|
| Collection year |
1999
|
| Language |
eng
|
| Abstract/Summary |
In Roman aqueducts, series of vertical dropshafts (i.e. dropshaft cascade) were used to dissipate the kinetic energy o the flow. Up to recently, it was thought that the dropshafts acted also as sediment traps. A new re-analysis of Roman dropshaft hydraulics was conducted with physical model tests performed at the University of Queensland. The results demonstrate that the vertical dropshafts could be very efficient energy dissipators and re-oxygenation structures, under appropriate flow conditions. The optimum operation of dropshaft is discussed and an analytical model is developed to predict these conditions. In addition, the performances of aqueduct dropshafts are compared with modern dropshaft designs. Dropshaft cascades were used successfully for centuries. The Roman engineers built sound dropshaft designs which were most efficient dissipators and aerators.
|
| Subjects |
290802 Water and Sanitary Engineering
E1
|
| Keyword(s) |
Aqueducts
Cascades
Dropshaft cascades
Energy dissipation
Flow aeration
Hydraulics - history
|
| Additional Notes |
Paper presented at Session B12.
|
|
|
|
