Slogan of factory pipe gallery

Common trench, also known as * * * common trench, comprehensive trench and * * * common pipeline, refers to the construction of a public tunnel space underground and the centralized laying of various public pipelines. According to the different pipelines, the common trench has different properties and structures, which can be roughly divided into four types: trunk common trench, branch common trench, cable common trench and trunk-branch mixed common trench.

Common ditch, the main line, is generally located below the motor vehicle lane or road center, and mainly connects the original station (such as waterworks, power plants, gas factories, etc.). ) and the branch line share the tunnel. It usually does not directly serve the areas along the route. Pipes in ditches mainly include electric power, communication, tap water, heat and other pipes, and sometimes drainage pipes are included as required. In the trunk line of common ditch, power is mainly transmitted from EHV substation to primary and secondary substations, communication is mainly used for signal transmission between switch rooms, and natural gas is mainly transmitted from natural gas plant to high voltage regulating station. The cross section of trunk common ditch is usually round or multi-box, and it is generally required to set up working channels and lighting and ventilation equipment in the common ditch.