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The urban comprehensive pipe gallery, also known as the common ditch, is a municipal public tunnel space built under the city. The municipal public pipelines such as electric power, communication, and water supply are laid in a single structure according to the planning requirements, and unified planning, design, construction and management. Completely change the previous messy situation of each pipeline being constructed and managed separately. When the pipeline needs to be repaired, there is no need to excavate the road. The maintenance personnel and engineering vehicles only need to enter the underground pipe gallery from the maintenance channel for construction, which will not affect the road traffic, but also reduce the waste caused by repeated excavation. At the same time, it is also conducive to saving and intensive land use. , Reduce road cover facilities, reduce pipeline maintenance costs, and extend pipeline service life.