Characterisieces of cushion material of Wan anxi RC-faced rockfill dam and its experimental research;

Based on the tests and comparisons on the crushing slip-form tests of cushion material side-slope and the crushing tests of cushion material moving sidewall of the dam,we determined to adopt cushion material moving sidewall crushing technology in Chahanwusu concrete facing rockfill dam.

Investigation indicates that the mixture of ballast and sand may be served as bedding stuff at the loosest mixture density and the last porosity of mixture, when settlement is less and the bedding stuff is steady.

Investigation indicate that the mixture of ballast and sand may serve as bedding stuff at the most loose mixture density and the least porosity of mixture, when settlement is lesser and the bedding stuff is steady.

Application of natural diluvial deposit in the bedding materials of concrete facing rockfill dam;

The construction technology for the bedding of the face slab on high concrete face rock fill dam is summarized and then the new trial on the winter protection measures for the bedding material in cold region is also introduced herein, which can be taken as a reference for the similar projects.

The first issue, permeability coefficient and permeability stability of natural sandy gravel material and the feasibility of using it as bedding material.