BACK NATURAL GROUND STIFFNESS EVALUATION DEVICE AND STIFFNESS EVALUATION METHOD THEREOF, AND TUNNEL LINING DEFORMATION REPAIR DEVICE AND DEFORMATION REPAIR METHOD THEREOF

摘要

To provide a stiffness evaluation device for a back natural ground, which can easily evaluate the stiffness of a back natural ground of a tunnel lining useful for designing a tunnel reinforcement, and a stiffness evaluation method thereof.SOLUTION: A stiffness evaluation device 6 evaluates the stiffness of back natural grounds G, Gof a tunnel lining T. The stiffness evaluation device 6 evaluates the stiffness of the back natural grounds G, Gon the basis of a load F applied by a loading device 2, an elongation udetected by an elongation detection device 4, and displacements u, udetected by displacement detection devices 5L, 5R. When the load F is applied, a stiffness evaluation unit 15 evaluates the stiffness of the back natural grounds G, Gon the basis of the displacements u, uof inner surfaces of side walls T, Tof the tunnel lining Tand the load F. The stiffness evaluation unit 15 evaluates the stiffness of the back natural grounds G, Gon the basis of the detection result of a load detection device 3 and the detection results of the displacement detection devices 5L, 5R.SELECTED DRAWING: Figure 1