Research on power cable tunnel and urban utility tunnel

In recent years, with the rapid development of urbanization, in order to greatly save underground space resources and land resources and improve the capacity of power grid to withstand blizzard, flood, typhoon and other natural disasters, most of urban power grid adopt underground power cable power transmission system; particularly, ultra-high pressure and large capacity transmission lines mainly adopt the laying method of large cross-section electric power tunnel. Construction of special electric power tunnel can effectively solve the problems of increasingly strained electric power corridor, power supply reliability, public security and electromagnetic interference. Urban utility tunnel is such a public utility which is once designed and constructed, with intensive laying of public water, power, cold and heat or communication pipelines. Construction of a utility tunnel has become a developmental tendency, and planning and construction of underground utility tunnel projects in a considerable scale has been proposed in many areas, so as to thoroughly solve "Zipper Road" problems, and create considerable social and environmental benefits.