| 摘要 |
PROBLEM TO BE SOLVED: To efficiently isolate vibration of a railroad or a road transmitted to the ground, and an facilitate its construction. SOLUTION: In underground vibration-proof wall A to isolate vibration transmitted through the ground 4 by forming a continuous wall, wall bodies 6a, 6a to compose the continuous wall are vertically provided as a pair to face each other, and ball bodies 7, 7, 7, 7 are held at spots between the wall bodies 6a, 6a.
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