Open the gate to release water! 3700 cubic meters of discharge per second! The Sanmenxia Dam opens for pre flood Yellow River water and sediment regulation

Tech 2023-07-08 15:32:35 Source: Network

Dahe Daily, video reporter of Henan Lu Bin, correspondent Bing Lei, Wang MeixinA thousand miles of water, a waterfall reappears! At 18:00 on July 6, with the accurate opening of the discharge hole of Sanmenxia Dam, a huge "water tap" gushed in an instant, with rough waves and sonic canyons, the Yellow River water and sediment regulation work before the flood season in 2023 was officially started, helping to flush the tail of Xiaolangdi Reservoir and providing follow-up power for the water and sediment regulation of Xiaolangdi Reservoir.On the same day, the Dahe Daily Henan video reporter saw at the flood discharge site that the Yellow River water gushed out along the hole, just like white practice, and the water waves hit the river channel, making a huge roar

Dahe Daily, video reporter of Henan Lu Bin, correspondent Bing Lei, Wang Meixin

A thousand miles of water, a waterfall reappears! At 18:00 on July 6, with the accurate opening of the discharge hole of Sanmenxia Dam, a huge "water tap" gushed in an instant, with rough waves and sonic canyons, the Yellow River water and sediment regulation work before the flood season in 2023 was officially started, helping to flush the tail of Xiaolangdi Reservoir and providing follow-up power for the water and sediment regulation of Xiaolangdi Reservoir.

On the same day, the Dahe Daily Henan video reporter saw at the flood discharge site that the Yellow River water gushed out along the hole, just like white practice, and the water waves hit the river channel, making a huge roar. Water splashed everywhere and mist filled the air. The tourists who came to watch at the scene were wet in their clothes, but their enthusiasm remained strong. They raised their phones to take photos and checked in, shouting "It's too shocking".

According to the instructions of the Yellow River Committee, the Sanmenxia Reservoir will discharge 2 hours per second at 2000 cubic meters, 4 hours per second at 3000 cubic meters, and 3700 cubic meters per second from 0:00 on July 7. During this process, the Sanmenxia Reservoir will provide 600 million cubic meters of water for downstream water and sediment regulation.

At the same time, Guxian Water Conservancy Complex, located at Luohe River, a tributary of the Yellow River, is also one of the supporting reservoirs for water and sediment regulation of the Yellow River this year. On July 3, according to the regulation instruction of the Yellow River Commission, it adopted a small flow of 200 cubic meters per second to control the discharge. At 19:00 on July 6, the discharge increased to 300 cubic meters per second.

It is understood that with the arrival of the main flood season of the Yellow River, the Yellow River Commission will implement the pre flood water and sediment regulation of the Yellow River in 2023 starting from June 21, lasting about 20 days. According to the principles of safety, controllability, and overall consideration, combined with the requirements of the middle reaches of the Yellow River for flood control, this year's Yellow River water and sediment regulation will mainly adopt the joint regulation mode of Wanjiazhai, Sanmenxia, and Xiaolangdi reservoirs, with the cooperation of the tributaries of Luhun, Guxian, and Hekou Village reservoirs. Under the premise of ensuring flood control safety, the middle reaches of the reservoir group will be scientifically regulated to maintain the flow capacity of the middle reaches of the downstream river channel, and the reservoir will discharge sand and reduce sedimentation Ensure the safety of drought resistant water use and other goals, and leverage the comprehensive benefits of water resources.

As an important link, the Sanmenxia Dam on the Yellow River plays an important role in connecting the preceding and the following. The discharge of water from the Wanjiazhai Reservoir will be relayed, flushing the Sanmenxia Reservoir area and maximizing the erosion of sediment at the end of the Xiaolangdi Reservoir, providing strong power for the artificial shaping of density current and sediment discharge from the Xiaolangdi Reservoir.

During this water and sediment diversion, the Administration of Sanmenxia Dam will also pay close attention to the change of weather situation and the evolution of water flow, timely rolling analysis of water and rain conditions, strengthen the emergency duty and flood prevention consultation of Sanmenxia and Guxian hubs, strictly implement the dispatching instructions, do a good job in water release pre alarm, strengthen project patrol and defense, and ensure the smooth implementation of water and sediment diversion.

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