Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)
- 2002.10a
- /
- Pages.253-258
- /
- 2002
Dependancy of Internal Friction Angle of Rock Materials on Confining Pressure
Rock재료의 내부마찰각의 구속압 의존성
Abstract
In this study the confining pressure dependancy of internal friction angle of rock materials are discussed based on the results of a series of large triaxial tests under consolidated-drained condition. The rock materials tested are two kinds of grain-size distribution ;one is well graded, the other poorly graded(a uniform distribution). The obtained results shows that the internal friction angle of rock materials decreases more sharply in low stress level than in high stress level, and the test constants A and b in De Mello's failure criterion on rockfill materials are A =0.683∼l.584, b=0.712∼l.015 for the well graded and A=1.145∼l.523, b=0.788∼0.880 for the poorly graded.