Chute
A firing channel is a mostly artificial, steep channel in which water with a free surface flows off with a shooting . Weft channels are often part of a flood relief system in barrages, but are also occasionally used in river engineering. In rivers, however, the water that flows quickly in troughs represents an obstacle for fish and other living beings, which is why less steeply inclined bed ramps and bed slides are more common in natural hydraulic engineering.
Designs for flood relief
Firing channels for flood relief systems must primarily be able to drain water quickly and safely. The channels are therefore often made of concrete or masonry and have a rectangular or trapezoidal cross-section. The inclination of weft channels is great compared to conventional channels and gives the water high flow velocities, which are reduced in a connected stilling basin before the water flows into a natural body of water. Disruptive bodies in the form of concrete teeth or the like arranged at the end of the firing channels, as well as ski jumps, are also used for energy dissipation .
See also
- Oroville Dam , the damaged firing channel of which made an evacuation necessary in 2017
literature
- H. Patt, P. Gonsowski, D. Vischer, A. Huber: Hydraulic engineering: Basics, design of hydraulic structures and systems . 7th edition. Springer, 2011, ISBN 978-3-642-11963-7 .
Individual evidence
- ↑ Firing channel. The building dictionary, accessed on September 12, 2013 .
- ↑ Firing channel. Universal Lexicon, accessed September 12, 2013 .
- ↑ H. Patt, P. Gonsowski, D. Vischer, A. Huber: Hydraulic engineering: Fundamentals, design of hydraulic structures and systems . 7th edition. Springer, 2011, ISBN 978-3-642-11963-7 , pp. 94 .