1999 年 9 巻 p. 95-100
In this study, a new form of back analysis procedure has been applied to the shallow large tunnel project to decide the appropriate support system and to evaluate the safety of a tunnel. By using this procedure, the unknowns including in-situ stress, Young's modulus, and arbitrary non-elastic strains occurring in a surrounding ground due to the tunnel excavation can be back-calculated efficiently and accurately.