Date: June 2022
Location: Qingdao, Shandong Province
Equipment: Tangxing RPB 4200*6900mm rectangular pipe jacking machine
Type: rail transit
Geology: silty, clay, complex geology
Significance: Qingdao Metro Line 4, as one of the major projects in Shandong Province in 2022, will play an important role in the city's rail transit network. The completion of Qingdao Metro Line 4 will greatly ease the traffic congestion in the main urban area and improve the functional quality of Qingdao.