New tunnel boring machine put to work in Anshan

A ceremony was held for the operation of the tunnel boring machine "Jishi" in Xi'anshan iron ore mine, Anshan city, Northeast China's Liaoning province, Dec 10, 2023. [Photo/ www.enfi.com.cn]

TBM, which is currently the most advanced tunnel construction equipment in the world, has the advantages of fast excavation speed, environmental friendliness and high comprehensive efficiency. It can carry out tunnel construction in complex geological conditions where traditional drilling and blasting methods are difficult to apply. It is widely used in railway, hydropower, transportation, subway and other tunnel engineering projects.

According to the report, Jishi has a total length of 188 meters, an excavation diameter of 7.03 meters and a total weight of 1,200 tons. After being put into use, its construction efficiency can be improved by more than three times compared to traditional drilling and blasting methods.