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North extension line of Shenyang metro line 2 finished smoothly


Recently, the transfixion of the section 6of north extension line for Shenyang metro line 2 has been finished smoothly,which is manufactured by NHI. It adopts the Φ 6.28m Earth-pressure balanceTBM, and the total tunneling mileage is 1502m. (Wang Yao)