caa a22 4500 463174771 CHVBK 20180406164822.0 cr unu---uuuuu 170326e20070801xx s 000 0 eng 10.1007/s00603-006-0084-9 doi (NATIONALLICENCE)springer-10.1007/s00603-006-0084-9 Analysis of Critical Excavation Depth for a Jointed Rock Slope Using a Face-to-Face Discrete Element Method [Elektronische Daten] [S. H. Li, J. G. Wang, B. S. Liu, D. P. Dong] Summary: The critical excavation depth of a jointed rock slope is an important problem in rock engineering. This paper studies the critical excavation depth for two idealized jointed rock slopes by employing a face-to-face discrete element method (DEM). The DEM is based on the discontinuity analysis which can consider anisotropic and discontinuous deformations due to joints and their orientations. It uses four lump-points at each surface of rock blocks to describe their interactions. The relationship between the critical excavation depth D s and the natural slope angle α, the joint inclination angle θ as well as the strength parameters of the joints c r ,φ r is analyzed, and the critical excavation depth obtained with this DEM and the limit equilibrium method (LEM) is compared. Furthermore, effects of joints on the failure modes are compared between DEM simulations and experimental observations. It is found that the DEM predicts a lower critical excavation depth than the LEM if the joint structures in the rock mass are not ignored. Springer-Verlag, 2006 Keywords: Slope stability, discontinuity, critical excavation depth, face-to-face DEM, limit equilibrium method, joint configuration nationallicence Li S. H. Institute of Mechanics, Chinese Academy of Science, Beijing, P.R. China aut Wang J. G. Tropical Marine Science Institute, National University of Singapore, Singapore aut Liu B. S. Institute of Mechanics, Chinese Academy of Science, Beijing, P.R. China aut Dong D. P. Institute of Mechanics, Chinese Academy of Science, Beijing, P.R. China aut Rock Mechanics and Rock Engineering Springer-Verlag 40/4(2007-08-01), 331-348 0723-2632 40:4<331 2007 40 603 https://doi.org/10.1007/s00603-006-0084-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00603-006-0084-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Li S. H. Institute of Mechanics, Chinese Academy of Science, Beijing, P.R. China aut NATIONALLICENCE 700 1- Wang J. G. Tropical Marine Science Institute, National University of Singapore, Singapore aut NATIONALLICENCE 700 1- Liu B. S. Institute of Mechanics, Chinese Academy of Science, Beijing, P.R. China aut NATIONALLICENCE 700 1- Dong D. P. Institute of Mechanics, Chinese Academy of Science, Beijing, P.R. China aut NATIONALLICENCE 773 0- Rock Mechanics and Rock Engineering Springer-Verlag 40/4(2007-08-01), 331-348 0723-2632 40:4<331 2007 40 603 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer