METHOD OF CONCRETE DAM CONSTRUCTION IN RIVER CANYON Russian patent published in 2017 - IPC E02B1/00 E02B7/10 

FIELD: construction.

SUBSTANCE: concrete dam is erected in two stages. On the first - a reinforced concrete platform is built above the river at a mark sufficient to pass the floods and the concrete of the upper part of the dam is laid on it. On the second one, concrete is placed in the lower part of the dam. The first stage begins before completion, and the second stage - after the work on the tunnelling of the spillway tunnels, backfilling of the upper and lower jumpers, the river diversion into the spillway tunnels and drainage of the pit. In order to use spillway tunnels with lower capacity and, thus, to reduce capital costs for dam construction, work on the diversion of the river into spillway tunnels, laying concrete in the lower part of the dam and subsequent overlapping of the catchment tunnels is carried out during the intermittent period.

EFFECT: reduction of the dam construction time, due to earlier work on laying concrete in its body.

2 cl, 3 dwg