MAINTAINED FLOW-RATE ADJUSTMENT METHOD AND MAINTAINED FLOW-RATE ADJUSTMENT SYSTEM

Title:

MAINTAINED FLOW-RATE ADJUSTMENT METHOD AND MAINTAINED FLOW-RATE ADJUSTMENT SYSTEM

Document Type and Number:

Japanese Patent JP2023108859

Kind Code:

A

Abstract:

To provide a maintained flow-rate adjustment method with which water intake amount for hydroelectric power generation can be increased while ensuring the maintained flow-rate when taking in water from the water intake gate for hydroelectric power generation at the dam and discharging the maintained flow-rate from the discharge gate to the downstream side of the dam.SOLUTION: A maintained flow-rate adjustment method includes a cut-off weir 3 of a dam 2, a hydroelectric power generation water intake gate 4 that takes in water used in a hydroelectric power generation facility 13 located far from the dam 2, a discharge gate 5 for discharging water to a downstream side 12 of the dam 2 and a sand discharge gate 6 provided in the cutoff weir 3, and includes a sand discharge gate opening process of increasing the opening of the sand discharge gate 6 at desired intervals until the sum F of a discharge amount F1 from the discharge gate 5 and a discharge amount F2 from the sand discharge gate 6 reaches a maintenance flow-rate M when a water level L falls below a water level L0, when water is taken in from the water intake gate 4 for hydroelectric power generation and discharged to the downstream side 12 from the discharge gate 5 and when the water level L of the dam 2 required to secure the maintained flow-rate M on the downstream side 12 is the water level L0.SELECTED DRAWING: Figure 1

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