The key findings of the paper are as follows: Numerical parameters study of the interface-element was carried out, the friction angle depends on rockfill zone material and normal and shear stiffness coefficient of the two materials (concrete and rockfill), the average values were found to be the most appropriate.

• 임정열(K-water연구원 기반시설연구소 책임연구원) | Lim, Jeong Yeul
• 장봉석(K-water연구원 기반시설연구소 책임연구원) | Jang, Bong Seok