It is understood that the project is an important energy artery of the science and innovation corridor in the west of Zhejiang City, and will provide stable energy supply for the demonstration blocks of innovative science and technology industries such as West Lake University, West Lake Science and Technology Economic Park and Cloud Valley Town after completion.

Nowadays, in order to solve the contradiction between urban construction and power construction, power transmission lines are gradually shifted from overhead laying to underground cable laying, and the number of large-capacity, long-distance and large-section cable projects is increasing. State Grid Hangzhou Power Supply Company Zijinkang Tunnel Project General Manager Mao Wei introduced, due to the traditional cable design segment length is short, usually around 500 meters, resulting in a sharp increase in the number of cable joints, engineering investment also rose. At the same time, the increase in the number of joints leads to a corresponding increase in the probability of cable operation failure.

The reporter learned that long-distance single-section cables require relatively flat terrain and straight paths. The tunnel between the G1-G6 wells of the project is the only long-distance horizontal section of the project, the distance between the two top tube wells on both sides of the firewall is 1760 meters, and each side has reserved about 30 meters of space to make joints, thus customizing this special cable of 1715 meters long.

In order to guarantee the transmission of this special cable into the tunnel, State Grid Hangzhou Power Supply Company customized a cable tray with a diameter of 7.8 meters, transported the cable tray with a total weight of more than 90 tons through special flatbed trucks, and formulated a special cable tray lifting plan, using two cranes to work together synchronously.