Support structure of disposal hole, geological disposal facility and geological disposal method

摘要

PROBLEM TO BE SOLVED: To provide a support structure of a disposal hole, which has a function for preventing separation and collapse of a hole wall, and which does not use a cement-based material as much as possible, and a geological disposal facility and a geological disposal method.SOLUTION: A support structure of a disposal hole includes: a rock-using segment 18 installed on an excavation wall surface of a disposal hole 16; a stone layer 22 made of stones 20 backfilled between the rock-using segment 18 and the excavation wall surface of the disposal hole 16; and water W filled in gaps between the stones 20.SELECTED DRAWING: Figure 1