Experience in restoration of the spillway dissipator of the head hydroelectric station of the Chir-Yurt sequence

Conclusions

• 1. Operators should not violate the rules of operating gates established in designs on the basis of hydraulic investigations.

• 2. An increase of the resistance of uplift and withdrawal of the apron slabs of the bottom of a dissipator should be achieved primarily by anchoring them to the foundation, which also saves construction materials.

• 3. Protection of the surface of slabs and blocks of a dissipator from abrasion is achieved by placing on the slab surface a wear-resistant layer of high-grade, heavily reinforced, well-compacted and cured concrete prepared with strong crushed rock.