Discussion for transitional material’s compaction construction technique of faced rockfill dam of one hydro-junction project

Abstract

The transitional material zone was between the cushion material zone and the sandy gravel zone in the Faced Rockfill Dam of one Hydro-junction Project, which was from the C3 material yard with the diameter of less than 150.00 mm. By the in situ compaction tests of transitional material, its construction technique and parameters were obtained. Study showed that: its relative density was satisfied with the designed requirement (no less than 0.90) when it was compacted 8 times by the 26.0t self-propelled vibration roller at the speed of 2.0km/h on the conditions including the 20.0cm layout layer and the 5.0% water sprinkled content. Then there were series of compaction tests under the low temperature in winter. The study results was guided for the compaction construction of transitional material in the dam and was as the reference as the similar engineering.