Debris Removal at the dam

Подробнее о видео

Dams accumulate various types of debris, and cleaning methods vary based on the dam's size and design. Here are the main approaches:

For floating debris (logs, vegetation, plastic):
- Trash racks: Metal grates at water intakes that trap larger debris
- Mechanical rakes or screens that automatically collect and remove debris
- Specialized boats with conveyor systems that scoop floating debris
- Log booms (floating barriers) installed upstream to intercept floating material before it reaches the dam

For sediment buildup:
- Sluicing: Opening lower gates during high flows to flush sediments downstream
- Dredging: Using equipment to physically remove accumulated sediment
- Hydro-suction: Using pumps to move sediment through pipes to downstream areas
- Periodic reservoir drawdowns to expose sediment that can then be removed mechanically

Many large dams also employ dedicated debris management teams that monitor accumulation and deploy appropriate removal techniques based on conditions. The management approach varies seasonally, with more intensive collection typically needed after storms or spring runoff events.