This paper intends to explore the practical significance of synthetic operation of engineering pipelines in urban residential areas and the operating principle at each stage of the pipeline synthesizing process.

Basing on pipeline engineering characteristic, the authors first distinguish ecological environmental impact factor and analyse their properties, and each factor's influence.

Through discussing on the matters needing attention in implementing the major diameter water-supply pipeline engineering such as the materials selection, engineering design, concrete construction and other links, and points out that only taking these matters seriously and making checks strictly are the most basic guarantee for creating the excellent project.

Gradation criterion of earthquake damage to buried pipeline engineering;

The paper makes a preliminary discussion of the management of underground piping and lining in large and medium cities and proposes some measures and suggestions.