| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method of renovating a manhole inner peripheral surface without requiring construction work time and labor, hardly changing in appearance even if a fiber reinforced synthetic resin lining material is degraded, and having a smooth inner surface after renovation with no leakage of water. <P>SOLUTION: In the method of renovating the manhole inner peripheral surface, a back-filling material is filled between the inner peripheral surface of a dilapidated manhole with a vertical inner peripheral surface of plate shape and a linear corner part between a bottom face and the vertical inner peripheral surface, and a lining plate formed of a fiber reinforced synthetic resin plate. The lining plate is provided with projecting parts of conical shape with flat tops projecting onto the manhole inner peripheral surface side, and through holes are bored in the center of the tops by a punch to provide the manhole inner peripheral surface with anchor nuts or anchor bolts. The anchor bolts or anchor nuts are screwed through cut-off rings to fix the lining plate to the manhole inner peripheral surface to have a space equivalent to the projecting height of the projecting part between the lining plate and the manhole inner peripheral surface, and unhardened liquid mortar is filled in the clearance and hardened. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
