Patent ID: 8585323
Filing Date: 2013-11-19
Classification: E03F,F16L

Abstract:
1. A method of repairing a sewage pipeline without forming a trench, comprising: closing upper and lower portions of the sewage pipeline, a manhole, and an upper portion of a household branch pipe within a repairing section and filling a primary repairing liquid into the sewage pipeline at a preset pressure to allow the primary repairing liquid to be permeatedly applied to a damaged portion of the sewage pipeline; upon lapse of a first time period after filling the primary repairing liquid, sucking the primary repairing liquid in the sewage pipeline to remove the primary repairing liquid from the sewage pipeline; injecting a secondary repairing liquid into an interior of the sewage pipeline to allow the secondary repairing liquid to be impregnatedly permeated through the damaged portion of the pipeline; upon lapse of a second time period after the injection of the secondary repairing liquid, sucking the secondary repairing liquid in the sewage pipeline to remove the secondary repairing liquid from the sewage pipeline; cleaning the sewage pipeline, the manhole, and the household branch pipe after sucking the secondary repairing liquid; and removing the primary and secondary repairing liquids remaining on a bottom portion of the sewage pipeline after the cleaning the sewage pipeline.