Fear and terror of the Zeya hydroelectric power station — an article and a photo of the power plant

Author material — Alexander Popov Russos

On the Zeya River, in the far Amur region, there is an unusually high flood. I understand that this is happening in a completely atypical time. But it is. What would happen to the free-flowing river — it is terrible to imagine … Rather, all the water would have passed on the plains, sweeping away everything in its path. Or maybe not … but … nearly 9,000 cubic meters of water per second — it's not a joke. Namely, such inflows observed in the Zeya reservoir. Although to a record 15,000 so far away. 
And how can you not remember the Cheboksary hydroelectric power station, which is not the fault of environmentalists working to design head, which generates many problems. Somehow forget that there is a one percent flood happened in the 20s, and this bastard is about once every hundred years. And each year, the likelihood of recurrence of the flood is growing. In general, residents of Nizhny Novgorod, not envy. Residents downstream — the same as all the water in transit will be skipped to them, and not accumulated in the reservoir. Anyone out there not to be envied. In fact, this will be a local disaster to the flooding of vast areas … But back to the Far East.

First, a bit of the official text:
The network is already beginning to appear panicky comments that whether water flowed over the dam of the Zeya hydroelectric station, or is about to pour, whether the dam will fall. Despite the fact that every day about the situation on the Zeya hydroelectric station out press releases (here today), Updated daily infographics with the parishes of-cost-levels, still some easier to spread rumors, you make a minimal effort and find information.

Briefly about the situation at the station at the moment. The inflow of water into the reservoir after several days of decline again slightly increased and now stands at 8,900 m³ / s down (through the turbines and spillway) is reset 3482 m³ / s, ie, is less than 2.5 times, the remainder stays in the reservoir.

Reservoir level now — 318.5 m, the day it rose by 18 cm maximum height to which the project can be filled reservoir — 322.1 m, ie before it even 3.6 m clear that lead up to it will only be a last resort, by the rules of operation of the plant with a mark of 319.3 m valves fully open. We hope that this will not happen, but it can be a unique flood.

The dam's condition is normal and appropriate design parameters. Massively buttress dam of the Zeya hydropower plant construction is extremely stable and has large reserves of strength.

Now think about it, that the reservoir holds 5,400 cubic meters, collecting all the water in itself. Which otherwise would have passed just transiting the river and caused a poor lower on the plains. But experts such specialists. How many times have they Sayanka collapsed and fell, but it is still worth and feel great! And other dams covered with cracks, and other obscene things happen. The horror! But in practice, all the screaming and experts are screaming.

Unfortunately, I was not able to fly today to the Far East (the case of national importance held in Moscow by the throat), so the images passing through the flood spillway TRAMPLIN will not. But there is a video of RusHydro

And I'll show you how the station looked like a year ago.

1. The study of the Zeya hydroelectric capacity began in 1930. In 1954, research has identified the most promising target in the so-called Zeisky gate, where the river cuts through the mountains and enters the plains. It is here that comes to the surface rock mass.

    And I'll show you how the station looked like a year ago.

    1. The study of the Zeya hydroelectric capacity began in 1930. In 1954, research has identified the most promising target in the so-called Zeisky gate, where the river cuts through the mountains and enters the plains. It is here that comes to the surface rock mass.

    2. Construction of the Zeya hydroelectric power station in the Amur region on the river. Zeya began in 1964. The first hydropower unit was started up in 1975, and earned a full-power station in 1980.

    3. In 1928, a flood on Zee, which lasted about two months, has led to the flooding of 160 settlements, including parts of Blagoveshchensk. But with a capacious reservoir, Zeya HPP now copes with floods. In 2007, the basin of the Zeya formed a catastrophic flood, happening one time in 250 years. The maximum flow reached 15,200 m³ / s, but the reservoir has reduced spending in HPP See below three times — up to 5000 m³ / s, preventing the flooding of vast areas, and the death of many people.

    4. The same idle spillway. Now here is raging elements.

    5. Springboard for water. Her energy is extinguished in flight, unlike Bureyskaya where the jets of water are directed at each other. Here the water just 'throw' away. The video above is perfectly clear.

    6. Power plant — 1,330 MW.

    7. But the highlight of the station — it's her dam. It's made buttress. Such construction in Russia is not applied anywhere else.

    8. Short teaching on these types of dams.

    9. Transformers. Large. Humming.

    10. Just a beautiful machine. And what is his cabin!

    11. Engine room station.

    12. Spillway dam 180 m long and the right bank dam of 150 m and a height of 110 meters

    13. Very beautiful design of the windows.

    14. Who will sink — will not swim more.

    15. Brief Buttress dam can say that it is "empty."

    16. Support the upstream face massive buttresses that transmit the load on the ground.

    17. Here buttresses converging wedge, forming a pressure front. And the rest of the space — the air. On the part of the downstream dam is closed plates due to climatic conditions. And that could leave the ribs outward.

    18. Zeya reservoir.

    19. The crest of the dam.

    20. Now a light strip is not visible — the water level rose.

    21. Top view of the power house.

    22. Spillway.

    23. Length of dam — 714 meters.

    24. In the power plant building has 6 diagonal hydraulic units: 4 hydraulic capacity of 225 MW, 2 hydraulic capacity of 215 MW, operating at design head 78.5 m (315 m DMN).

    25. Unfortunately, to see the clean room is almost impossible. Repair Tech GA is built in such a way that its parts are stored on adjacent machines. And the repair goes in cycles. Finished one — we repair next. Finished sixth — and there are already first need to re-do the repair.

    26. Hall inside unremarkable. Simply industrial space.

    27. The stator of the generator. The rotor is removed, and can be seen at the bottom of the turbine shaft and the guide vane actuator.

    • 28. View from below.

      29. Very drawing on some secret closet.

      30. Our escort on station. Big thanks to him for an interesting tour!

      31. That's what I like the press tours with RusHydro — so it's almost complete freedom of action. Within reason, of course. Do you want to climb up to the crane — please. In the volute (pictured just one) — so do not question. The mast lighting — easily. A dip in the upper reach — you can, but do not need. :)

      32. The hole from hell. By the pipe diameter almost five meters, water is supplied to the turbine.

      33. And once again volute.

      34. Log into it.

      35. And some night shots with fully lit.

      36. A beauty!

      37. Here is such an unusual and desired station is located in the Far East.

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