4Sel By A R. Tunneling in soils-ground movements,and damage to buildings in Workington, UK I-J].Geotechnical and Geological Engineering, 1999, 17(3) :351-371.
5Oettl G,Stark R F, Hofstetter G. A comparison of elastic-plastic soil models for 2D FE analyaea of tunneling [J]. Computers and Geotechnica, 1998,23(1) : 19-38.
6Itasca consulting group. Fast Lagrangian Analysis of Continua in 3 Dimension (FLAC^3D) , Version 2. 0,Manual, Itasca, Minnesota, Minneapolis. 1997.
