SMALL DAMS PETITS BARRAGES
SMALL DAMS PETITS BARRAGES
SMALL DAMS PETITS BARRAGES
- TAGS
- dams
- petits
- barrages
- cbdb.org.br
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5. ABUTMENTS AND CONTACTS WITH ABUTMENT<br />
� Erosion<br />
� Differential movement<br />
� Cracks<br />
� Settlement, slides, depressions, bulges, sinkholes<br />
� Leakage water (seepage)<br />
� Animal burrows<br />
� Vegetation at the dam toe (large shrubs, trees)<br />
6. APPROACHING CHANNEL<br />
� Instability of the side channel<br />
� Tilting of sidewalls<br />
� Erosion or back cutting<br />
� Sloughing<br />
� Restriction by vegetation<br />
� Obstruction with debris<br />
� Log boom, condition or need<br />
� Concrete lining deterioration, cracking or settlement<br />
7. OUTLET WORKS – SPILLWAY, SPILLWAY’S CHUTE, STILLING BASING/POOL<br />
� Concrete surfaces show:<br />
Spalling or scaling<br />
Cracking<br />
Erosion<br />
Exposed reinforcement<br />
� Energy dissipators show:<br />
Sign of deterioration<br />
Covered with debris<br />
Sign of inadequacy<br />
Obstruction<br />
� Slab movement, heaving, settlement<br />
� Wall movement, settlement, tilting<br />
� Undermining foundation from plunge poll by erosion<br />
� Poor hydraulic performance, hydraulic jump in bucket<br />
� Excessive vibration<br />
8. OUTLET WORKS – INLET STRUCTURES/CONDUIT<br />
� Seepage into structure<br />
� Debris or obstruction<br />
� Displaced floor slabs<br />
� Poor hydraulic conditions, turbulence or vortices<br />
� Vibrations, interference with flow<br />
� Concrete surfaces show:<br />
Spalling or scaling<br />
Cracking<br />
Erosion<br />
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