| 摘要 |
The present invention relates to a device for grouting a hollow of a tunnel capable of efficiently grouting the hollow on the upper part of lining concrete after pouring tunnel lining concrete and, more specifically, to a device for grouting the hollow of the tunnel capable of preventing the upper part of the lining from weakening due to an empty space or preventing the occurrence of cracks on the upper part of the lining as fillers are filled in and the empty space is not formed between concrete wall and the ground by installing a main pipe and a pressure maintaining pipe in the hollow remaining on the upper part of tunnel lining after pouring the concrete. |
