Experimental study of pressure flushing of non-cohesive sediment through slotted pipe bottom outlet
ABSTRACT Among several techniques for prevention and mitigation of reservoir sedimentation, bottom outlets arise as a means of removing sediment deposited close to the dam. Given the reduced sediment removal provided by traditional bottom outlets under pressure flushing conditions, this article proposes a new type of structure that aims to increase sediment removal in the direction parallel to the dam axis. An experimental installation was employed to evaluate its operation as a function of the variation of its diameter and flow and sediment characteristics. Through analysis of the bathymetry generated by the structure, a dimensionless relation for predicting the scour pit length was obtained, presenting good fitness to the experimental data.
| Main Authors: | , , , , , |
|---|---|
| Format: | Digital revista |
| Language: | English |
| Published: |
Associação Brasileira de Recursos Hídricos
2021
|
| Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2318-03312021000100201 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|