Analysis of soil state in the core of the Ust-Khantaika hydroelectric plant dam

Abstract

In the core of the river-channel dam of the Ust-Khantaika hydroelectric plant rewetted, weakly compacted moraine soils and soil mixes were placed, which during the construction period were frozen, a very nonuniform core structure being formed with interbedding of thawed and frozen soils, which substantially differ in water content and density in the different zones: from hard to flowing (17%) and from loose (with γdr.d.≤1.4–1.5 g/cm3) to overcompacted (with γdr.d.≥1.8–1.9 g/cm3).