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New tunneling technology used in Metro line 2

New tunneling technology used in Metro line 2Construction of a major tunnel section in the Shenzhen Metro Line 2 was completed last Sunday. The 3 kilometer finished tunnel costs 583 million yuan and runs from Antuoshan to Xiangmeibei stations. The tunnel contractor achieved a zero record of major accidents while building the tunnel.

The tunnel used an advance shield tunneling technology, since the section of the Line 2 ran under busy streets and buildings, plus a complex networks of underground pipes and cables. This marked the first time the company used this type of technology in building tunnels.

Shenzhen Municipal Engineering Corp. is the only company that have the shield tunneling technology in Shenzhen, spending 150 million yuan on two tunneling machines last June 2009.



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