The Underground Urban Pipeline Corridor is a tunnel space constructed beneath the city, integrating various engineering pipelines such as electricity, communication, gas, heating, water supply, and drainage into one system. It features dedicated maintenance and hoisting ports, as well as a monitoring system. It implements unified planning, design, construction, and management, serving as a crucial infrastructure and "lifeline" for the city's operation.
An underground utility tunnel refers to a public tunnel used beneath the city for the centralized laying of municipal pipelines such as electricity, telecommunications, broadcasting and television, water supply, drainage, heating, and gas.