1Sakurai S , Abe S. A design approach to dimensioningunde - rground openings [A] . In : Proc 3rd Int Conf Numerical Meth- ods in Geomechanics [ C ] . Aachen , 1979 : 649 - 661.
2Sakurai ,S ,Takeuchi K. Back analysis of measured displacementof tunnel [J] . Rock Mech and Rock Eng , 1983 ,16 (3) :173 - 180.
3Gioda G, Pandolfi A , Cividini A. A comparative evaluation ofsome back analysis algorithms and their application to in2situload tests [ A~. In :Proe 2nd lnt Syrup on Field Measurement inGeom[ C] . Kobe ,1987:1131 - 1144.