Regulation of suspended sediment in Xiaolangdi of the Yellow River. What is the function of regulating water and sediment in the Yellow River?

Main functions of water and sediment regulation in the Yellow River:

1, using water to transfer sediment from the Yellow River;

2. Scour the sediment in the lower reaches of the Yellow River;

3. Prevent the Yellow River bed from rising again.

The Yellow River has a high sediment concentration. In order to ensure the normal flow of the Yellow River, it is necessary to carry out regular water and sediment regulation. Water and sediment regulation refers to the effective control and regulation of water and sediment by using the reservoir capacity under the premise of fully considering the sediment transport capacity of the lower Yellow River. Store or discharge water and sediment in time.

Extended data:

The main means of water and sediment regulation is to discharge a large amount of water from the reservoir with a large flow, form artificial flood peaks, and increase the scouring capacity of the downstream riverbed. Since 2002, the Yellow River has carried out water and sediment adjustment once a year. After the first four water and sediment adjustments, more than 300 million tons of sediment in the river channel have been washed into the sea, and the average downstream of the Yellow River has decreased by 1 m, and the discharge capacity has increased from 1.80 cubic meters per second to 3,500 cubic meters per second.

Three water and sediment transfer experiments and six water and sediment transfer operations have achieved remarkable results in maintaining the healthy life of the Yellow River. The main canal in the lower reaches of the Yellow River is scoured across the whole line. The main characteristics of the lower reaches of the Yellow River are easy sedimentation and migration. The biggest gain of nine water and sediment transfers is that the whole downstream main canal is scoured. The total sediment transport in the reservoir area is 2190,000 tons, and the total sediment discharged into the sea is 575 million tons.

Baidu Encyclopedia-Regulation of Water and Sediment in the Yellow River