| 摘要 |
PURPOSE: A trenchless large diameter pipeline inside repairing method is provided to reinforce the strength of repairing materials and improve permeability by adding a stainless steel wire mesh and a cylindrical water expandable rubber band. CONSTITUTION: In case of repairing the whole inside including the middle part(5) and a partial repaired part(3) of the connecting part of a large diameter pipeline(1), non-woven fabric(9) is adhered to the connecting par of the pipeline and the partial inside of both ends of the pipeline. A wire mesh(11,11') is installed in the connecting par of the pipeline and the partial inside of both ends of the pipeline sectionally. A cylindrical water expandable rubber band(15) is wrapped and installed at both ends of the outside of the wire mesh. Cement mortar or resin(19) is cast to cover the wire mesh to regular thicknesses from the inner wall of the pipeline. Fiber reinforced resin or epoxy(21) is applied for surface finishing. A U-groove(13) is formed on the inside of the wire mesh, and a wire is fixed in the outside of the wire mesh.
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