Dam of earth or rock fill having impervious core

摘要

A dam of earth or rock fill is provided with an impervious core by forming a trench near the center of the fill and sequentially building plate-shaped wall sections in the trench from poured soil-cement mixture. The wall sections which are superimposed on each other in edge- to-edge relationship are hingedly connected by joint assemblies of tough, yieldable material, such as soil-cement enriched with bentonite.