Urban comprehensive pipe gallery, also known as common ditch, is a municipal public tunnel space built underground in the city. According to the planning requirements, the municipal public pipelines such as power, gas, communication, heating, water supply and drainage are centrally laid in one structure to implement unified planning, design, construction and management. Change the previous chaotic situation of each pipelines respective construction and management. When the pipeline needs to be repaired, the maintenance personnel and engineering vehicles only need to enter the underground pipe gallery from the maintenance channel to construct, which not only does not affect the road traffic, but also reduces the waste caused by repeated excavation. At the same time, it is also conducive to saving land, reducing road well cover facilities, reducing pipeline maintenance costs, and extending the service life of the pipeline.

The comprehensive pipe gallery belongs to "lifeline engineering", and the seismic fortification intensity of the building should be increased by one level. The "lifeline project" is a project that maintains the urban survival function system and has a significant impact on the national economy and the peoples livelihood. It should have sufficient seismic capacity, flexible response capacity and rapid recovery capacity.