6Manchao He, Qingwei Duan, Xiaoming Sun. Computer numeric simulation of soft rock in china[A]. Computer Application in the Minerals Industries. Proceedings of the 29th International Symposium on Computer Application in the Minerals Industries[C]. Beijing:[s n ], 2001, 4: 25-27.
8Liu Q S,Zhu W S,Wang P. Determination for optical parameters of full-column grouted bolts for reinforcing soft rocks[A]. In:Proc. Int. Sym. on Modern Mining Technology and Method[C]. Tai(an:International Academic Publishers,1989,201~207
9Tang C.A. Numerical Simulation of rock failure and associated seismicit [J]. Int.J.RockMech.Min.Sci.,1997,(34): 249-262.