| 摘要 |
PURPOSE: A tunnel supporting device is provided to increase working speed by securing a working space and to improve structural stability and marketability by maximally increasing bearing capacity. CONSTITUTION: A tunnel supporting device is composed of multiple tunnel supporting bars(100) and multiple turn buckles(200). The tunnel supporting bars are installed in a longitudinal direction of a profile(2). The turn buckels connect the tunnel supporting bars and support the inside the profile. The tunnel supporting device prevents the profile from becoming deformed by the pressure of mortar(M) injected between an existing pipe(1) and the profile.
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