フィルダムの水理的破壊現象に関する研究

Abstract

This paper concerns the mechanism of hydraulic fracturing caused by reservoir water pressure in earth and rock-fill dams. A few new test devices and testing procedures were proposed for laboratory element tests in order to reproduce seepage fracture in soil mass, and the relationship between conditions of hydraulic fracturing and those of compaction and stress states in embankments was investigated by varying several factors. FEM stress-strain analysis was also conducted for rock-fill dams with a centrally located core to understand behavior of stress transmission and arching action in the core zone, which should be main factors associated with hydraulic fracturing.