8Hoek.E,Carranza-Torres,Corkum.B. Hoek-Brown Failure Criterion-2002 Edition[A].Toronto:University of Toronto,2002.267-273.
9Zoback,M.L. First-and Second-order Patterns of Stress in the Lithosphere:The World Stress Map Project[J].{H}Journal of Geophysical Research,1992,(B8):11703-11728.
10Prochazka P P. Application of discrete element methods to fracture mechanics of rock bursts[J]. Engineering Fracture Mechan- ics, 2004,71(4):601-618.