Citation

Wang D, Li G, Cao L, Xu X, Zhang L. China Saf. Sci. J. 2019; 29(3): 95-101.

Copyright

(Copyright © 2019, China Occupational Safety and Health Association, Publisher Gai Xue bao)

DOI

10.16265/j.cnki.issn1003-3033.2019.03.016

PMID

unavailable

Abstract

For the sake of calculating the exposed length of the slope with inclined weak-layers, and considering the occurrence characteristics of rock mass and the spatial geometry of the potential landslide, a simplified mechanical model was built for the three-dimensional landslide of the slope with inclined weak-layers. The mechanical conditions on the boundary of landslide body were analyzed. A method for the three-dimensional stability of slopes by calculating the exposed length of inclined weak-layers was obtained with the theory of limit equilibrium. The method was verified by CDEM in Baiyinhua 1st open pit mine. The results show that there is a negative correlation between the stability coefficient Fs and the exposed length L of the weak layer in Baiyinhua 1st open pit mine non-working slope, the critical exposed length is about 500 m and the allowable exposure length is about 300 m, and that the exposed length of weak layer determined by this method comforms with the simulation results. © 2019 China Safety Science Journal. All rights reserved.

Language: zh