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Urban comprehensive pipe corridor, also known as common trench, is a municipal public tunnel space built underground in the city. Municipal public pipelines such as power, communication and water supply are centrally laid in one structure according to the planning requirements, and unified planning, design, construction and management are implemented. Completely change the past each pipeline construction, respective management of the chaotic situation. Pipeline needs maintenance without excavation road, maintenance personnel and the truck from the access channel construction of the underground pipe gallery, neither the road traffic, and can reduce the waste caused by repeated excavation, at the same time, has proved to be economical and intensive use of land and reduce road covers facilities, reduce the line maintenance costs, prolong the service life of pipeline.