| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a sound proof method and a sound proof structure of a tunnel that can facilitate installation and removal, and can ensure a high sound proof function.SOLUTION: An insulation wall 4 is configured to partition a tunnel 1 so as to provide a sound proofing space 3 between working faces 2 of a tunnel 1. An air bulk 7 supplying air in a shrinkable bulk container is provided, and then a foam solution obtained by diluting a gas generating agent with liquid is sprayed on the side facing the working face 2, and thereby a soundproof layer 8 is provided. By the soundproof layer 8 of the air bulk 7, a sound proofing function can be enhanced in the blasting of the working face 2. Also, the soundproof layer 8 can easily be provided to the air bulk 7 by the blast of the foam solution.</p> |
