Some results of observations of the Kiev hydrocenter structures

Conclusions

• 1. The seepage regime in the HES building's foundation agrees with laboratory investigations conduced when the structures were planned. Effectiveness of the upstream apron and curtain wall varies along the upstream face, but total head dissipation along the apron and curtain wall is almost constant at 93–97% of the head.

• 2. The depression surface in the bodies of the earth dams lies sufficiently below the downstream slope; some rise behind the drains is due to the seams of argillaceous sands in the foundation, which create a seepage-flow head. To obtain reliable data on the position of the depression surface in a structure in situ, it is necessary to study and thoroughly evaluate the geologic conditions in the dam's foundation and the seepage properties of its body.

• 3. Settling, which by the end of 1970 reached 46 to 74 mm for the building and 70 to 110 mm for the abutments, has practically stabilized in recent years.

• 4. Relative displacements of concrete-structure blocks perpendicular to joints follow the temperature regime. Sisplacements along the joint are negligible.