| 摘要 |
PROBLEM TO BE SOLVED: To provide a demolition method that enables efficient demolition of an underground concrete structure.SOLUTION: A pile 1 in ground 3 is drilled downward from an upper end, and an approximately vertical hole 5 is formed to a bottom of the pile 1. A detonating fuse 7 is inserted into the hole 5 and arranged in such a manner as to continue to a bottom of the hole almost throughout the length of the hole 5, and water is poured into the hole 5. Subsequently, concrete of the pile 1 is crushed by blasting of the detonating fuse 7; the ground 3 is excavated to the bottom of the pile 1; and debris 15 after the blasting is removed.SELECTED DRAWING: Figure 2 |
