| 摘要 |
PROBLEM TO BE SOLVED: To provide a tunnel structure resulting in no fatal damage even when a ground generates a large deformation and a method for building a tunnel. SOLUTION: In a widening range 17, the cross section of the tunnel 3 is widened, and high-toughness FRC shotcrete 11 is installed on a wall surface. The inside of high-toughness FRC shotcrete 11 is filled with a material having rigidity lower than the ground 1 and a shear-deformation reducing layer 13 is formed, and high-toughness FRC lining concrete 15 is mounted inside the shear-deformation reducing layer 13. COPYRIGHT: (C)2003,JPO |
