| 摘要 |
FIELD: construction. ^ SUBSTANCE: in an avalanche-protective dam of combined design on a crest there are flexible latticed structures made of metal profiles of various types, bars and others, rigidly connected to each other mutually perpendicularly to form rectangular cells, vertical stands and their buttress beams are strongly fixed to anchors installed in a reinforced concrete fixture of an upper slope and a dam crest. The dam track in plan passes with a turn angle opposite to the dominant direction of the avalanche, and the dam crest from the top of the turn angle to both sides has an incline of 0.01-0.05. Along the dam crest the metal latticed structures are arranged at the distance from each other, along the top of the lattices via holes made in the vertical stands there is a metal rope pulled with free travel to both sides. The rope is fixed to anchors with controlled tensioning devices arranged opposite to a discharge side of the dam. The proposed design of the dam provides for suppression of excessive energy of avalanche flow and distribution of impact force at higher area, therefore facilities operation reliability increases. ^ EFFECT: avalanche-protective dam of combined design may be efficiently used at areas of mountain infrastructure territories that are located on most endangered areas of impact of strong avalanches. ^ 2 cl, 3 dwg |
