| 摘要 |
The system is designed for repairing concrete conduits of any type of cross section such that the conduit can be inspected. Repair of the conduit 1 takes place without the need to open a trench and by gaining access to the conduit via existing shafts or newly executed shafts of small size. The system allows the repair of fissures and cracks 3 which exist in the wall 2 of the conduit 1, giving the latter a mechanical carrying capacity which is identical to or greater than that which it had in its initial design, the system in question being compatible with the maintenance of the service of the conduit 1 during the period of the restoration work, the safety of personnel working on said restoration being guaranteed at all times. The system is based on installing a series of A-frames (props) for reinforcement which are formed by profiles 5-5' in the shape of a T or of a U, and these are adapted to the inner surface of the conduit 1, a mesh (mat reinforcement) 10 covered with mortar then being placed over the entire inner surface in order finally to repair the base or floor 12 of the conduit 1. <IMAGE>
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