4Itasca Consulting Group,Inc.FLAC(Fast Lagrangian Analysis of Continua)User's Manuals,Version5.0[M].Minneapolis:hasca Consulting Group,Inc.,2005
5Donovan K,Pafiseau W G,Cepak M.Finite element approach to cable bolting in steeply dipping VCR slopes[M]//Geomechanics Application in Underground Hardrock Mining.New York:Society of Mining Engineers,1984:65-90
6MARTOS F.Concerning an approximate equation of the subsidence trough and its time factors[C]//International Strata Control Congress.Leipzig:[s.n.],1958:191-205.
7SCHMIDT B.Settlements and ground movements associated with tunneling in soils[Ph.D.Thesis][D].[S.l.]:University of Illinois,1969.
8PECK R B.Deep excavation and tunneling in soft ground[C]//Proceedings of the 7th International Conference on Soil Mechanics and Foundation Engineering.Mexico:[s.n.],1969:225-290.
9CORDING E J,HANSMIRE W H.Displacements around soft ground tunnels[C]//General Report the 5th Pan-American Conference on Soil Mechanics and Foundation Engineering Buenos Aires.[S.l.]:[s.n.],1975:571-632.
10CLOUGH G W,SCHMIDT B.Design and performance of excavations and tunnels in soft clay[C]// Soft Clay Engineering.Elsevier:[s.n.],1981:569-634.
