| 摘要 |
PURPOSE: A tunnel supporting structure is provided to lower the collapsing possibilities of an excavation surface by supporting the excavation surface using a rectangular lattice support material and an anchor. CONSTITUTION: A tunnel supporting structure comprises a rectangular lattice support material (110), a pair of vertical plates (140), a horizontal plate (150), and an anchor (130). The rectangular lattice support material comprises a curved rod (111) to be in touch with an excavation surface and a joint material (112) to integrally join a lattice girder rod. A vertical plate is formed with an accepting groove for accepting the lattice girder rod to be held in the lattice girder rod. The anchor penetrates a gap between the through-hole of the horizontal plate and the vertical plate and is inserted in the excavation surface.
|
