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2013年12月12日,盾构内径达4米的220千伏宁海路变电站进出线工程的220千伏进线工程正在施工。近年来,国网南京供电公司在建设电力线路的过程中,试点建设地下电缆隧道,集约利用地下空间。同时,南京城区变电站大量采用了户内式、紧凑型、组合型设备,进出线采用地下电缆,极大节省用地。220千伏九龙湖—南站电缆隧道是已投运的电缆隧道工程,全长7.3公里,直径3米,盾构长度1.1
On December 12, 2013, a 220-kilovolt incoming line to and from the 220-kilovolt Ninghai substation with a shield inner diameter of 4 meters was under construction. In recent years, the State Grid Nanjing Power Company in the construction of power lines in the process of pilot construction of underground cable tunnels, intensive use of underground space. At the same time, a large number of substations in Nanjing urban use of indoor, compact, modular equipment, access to underground cables, greatly saving land. 220 kV Kowloon Lake - South Station cable tunnel is already in operation of the cable tunnel project, a total length of 7.3 km, diameter 3 m, shield length 1.1