Nanjing metro line 7 shield machine started smoothly

On July 22, the modern express reporter learned that the shield machine "baihe 71" between yaohuamen station and xianxin road station of nanjing metro line 7 d7-ta03 civil engineering area started smoothly, which laid a solid foundation for the tunnel "tunnel access" of line 7.

It is reported that the left line of yaoxian tunnel is 510 meters in length and 425 rings in total. In order to ensure the smooth initiation of the shield tunneling, all parties involved in the construction should cooperate with each other, perform their respective duties and advance planning, and further promote the standardization and information management, providing an all-round guarantee for the initiation of the shield tunneling. It is worth mentioning that the smooth initiation of shield tunneling machine is the first shield tunneling project of nanjing metro line 7 TA03 standard project, which marks that the construction of line 7 TA03 standard project has officially entered the shield tunneling construction stage.

Nanjing metro line 7, located on the south bank of the Yangtze river, is the regional line with a large volume of traffic from northeast to southwest, passing through yuhuatai district, jianye district, gulou district and qixia district. The line will connect xishan bridge, hexi, wutang village, xiaozhuang, dingjiazhuang, yaohuamen and other major areas. The line is about 35.49km long, 27 stations are set up, including 13 transfer stations, and the whole line adopts underground structure.