In a pumped-storage power station of Jiangsu province

the concrete face rockfill dam is constructed in the upper reservoir. Because it is a great amount of excavation of impervious panel foundation

and most excavated materials are strongly weathered silty mudstone and argillaceous siltstone

it is of great significance to partly utilize excavated materials of strong weathered as embankment materials of the main dam for the purpose of reaching the balance between excavating and filling

protecting the environment

reducing abandoned materials and increasing economic benefit. Experimental study on the rock physical properties

compression strength

compressing distortion

mineral composition analysis and chemical analysis

etc.

were carried out for strongly weathered rocks. And the results of experiment on wet and dry characteristics of the rock

physical mechanical characteristics of circulation fatigue due to different temperatures

were obtained the variation law of rocks under the changed conditions of wet and dry cases

as well as different temperatures. The whole study provides the scientific basis for the utilization of strongly weathered rock and the prediction of their long-term stability.