| 摘要 |
PROBLEM TO BE SOLVED: To provide a support structure and a support method of a waste underground tunnel capable of maintaining imperviousness over an ultra-long period without deteriorating a clay system water impermeable material. SOLUTION: This support structure has a plurality of H-shaped steel support 5 adjacent in substantially parallel at a predetermined interval in the longitudinal direction of the underground tunnel. The support 5 has a first rib 6 formed inside the underground tunnel and a second rib 7 formed outside. A steel plate-like member 9 is arranged along the first rib 6 of the support 5. A clay material 10 is filled as a backfilling material between the plate-like member 9 and a wall surface of the underground tunnel. Bentonite being a water impermeable material and a granular material of bentonite can be used as the clay material 10, and the bentonite and a slurry including ethanol can also be backfilled. COPYRIGHT: (C)2007,JPO&INPIT
|
