Progress of Bagaevsky Hydroelectric Complex Construction

FBSC Head Control Gate Pit

Construction of Bagaevsky Hydroelectric Complex, federal project of strategic importance, and one of the largest transport infrastructure facilities in Rostov Region, is continuing. Construction is carried out on behalf of the President of the Russian Federation by Stroytransgaz Group. Bagaevsky Hydrielectric Complex will be used by fisheries, for municipal, industrial and agricultural water supply.

The main pit on Arpachinski Island is conditionally divided into two parts for the works: shipping lock and spillway dam. To date, dewatering and excavation activities for the spillway dam are carried out.

The works are cyclically linked. Once the water level has dropped, the ground is excavated, then dewatering and excavation are repeated. And so on, until the design elevation of minus 9.3 metres is reached. Over 900,000 cubic metres of soil have been excavated.

During construction of Bagaevsky Hydroelectric Complex, arrangement of berthing and approach channels in the upstream and downstream areas continues. They are intended to ensure that ships can easily enter and leave the lock, and comfortably wait for locking. The walls of berthing channels (guide dolphins) are made of Larsen sheeting L5-UM. To date, 956 pieces have been loaded in the upstream area and 336 in the downstream area. In parallel, the anchor plates, which act as a kind of anchor for the channel walls, are being installed. Pile pipes are sunk to reinforce the anchor cap (the top part of the pile foundation).

Reinforcing the monolithic flood bed slab

"Bagaevskiy Hydroelectric Complex is not only intended to re solve navigation challenges on the Lower Don. Fish passage and spawning channel is a part of the Hydroelectric Complex. This facility as part of the BHC is of particular importance for the region and the development of its fisheries – an artificial spawning ground will increase feeding opportunities for juveniles and adult fish. Capacity of the channel will be 2.5 to 3 folds higher than current values" said Levani Khumarashvili, Stroytransgaz JSC Director for Construction of Bagaevsky Hydroelectric Complex.

To date, dewatering and excavation works are being carried out in the fish and nesting route. In areas where this work has already been carried out, geotextile is laid and the bottom of the channel is secured with crushed stone.

The head control gate of fish passage and spawning channel, which is a hydraulic structure consisting of an inlet section, a flood bed part (an artificial bed for water stream flow) and an outlet section. In the future, it will function to maintain the optimal water flow in the fish bypass and spawning channel. Reinforcement work is being carried out on the base slab of the flood bed and the retaining wall, designed to protect the channel from erosion by the river.

The state customer is the Federal State Unitary Enterprise "Rostransmodernizatsia".

"Construction and installation of the main structures at the Bagaevsky Hydroelectric Complex are continuing. This project gets our full attention. Currently, about 500 workers and 160 units of machinery are engaged in the work daily. As for the concrete works, the first concrete was poured today at the head regulator of the fish passage and spawning channel. About 500 cubic metres per day are planned, for acceptance," said Denis Akhayev, Deputy Director General of the Federal State Unitary Enterprise "Rostransmodernizatsia".

 

Background:

Cofferdam is a temporary water-retaining structure. At the BHC it is arranged in the areas of the head race and the tail race.

Race is an area where the water surface adjoins the hydraulic structure. The head race is upstream the river, the tail race is downstream.

Pile cap is the top part of the pile foundation that distributes the load from the load-bearing components of a building or a structure.

 

Project background:

The Bagayevsky Hydroelectric Complex is the most important infrastructure project not only for the Rostov region, but also for the entire country. The hydroelectric complex under construction will be composed of a shipping lock with a central control room, upper and lower approach channels with mooring-guiding structures, a spillway and earth fill dam, a meandering fish bypass and spawning channel and a fish passage lock, industrial, service, engineering and auxiliary facilities, and housing for operating personnel. To ensure the navigation safety, channel-regulating dams are being constructed, as well as shore protection dams that will prevent the development of bank erosion processes (washout and collapse), protect from the impact of ship waves and reduce the negative impact of waters on the population living in these areas. In order to ensure guaranteed waterway dimensions (depth – 4 m, width – 80 m, bending radius – 500 m) in the section from the Kochetovsky Hydroelectric Complex site at km 3004.5 of the waterway of the Integrated Deep Water System (IDWS) to the Bagaevsky Hydroelectric Complex site at km 3089 of the IDWS waterway, dredging and river cut-off are envisaged.