This paper focused on the key technical indicators and control requirements of grouting repair de-sign,construction,quality inspection and engineering acceptance in the"Technical specification for grouting re-pair engineering of urban sewer pipeline(T/CECS 1471-2023)".The technical points of grouting design were analyzed in details.The selection basis and application scope of grouting materials and grouting methods were put forward.And the evaluation index of grouting repair effect was clarified.This specification innovatively de-veloped grouting materials and internal grouting methods suitable for drainage pipeline repair,and filled the gap in the technical standards for the application of grouting methods in drainage pipeline repair,which would have guiding significance for the design,construction and acceptance of grouting repair of urban drainage pipeline.
GroutingGrouting repairingSewer pipelineInternal groutingGrouting construction
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