9Hoek E. The influence of structure upon the stability of rock slopes[A]. Proc 1st Symposium on Stability in Open Pit Mining[C]. New York:A.I.M.E,1971.
10Hoek E,Londe P. Surface workings in rock. Advances in Rock Mechanics[A]. Proc 3rd Congress of the International Society for Rock Mechanics[C].Washington, D.C:National Academy of Sciences, 1974.