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  Interlaid rock wall excavation method and use of information technology for construction of a shallow subway station with large cross section

  The Wulukou station of Chongqing subway No.6 is located in the old pedestrian streetwith soft surrounding rock mass. Its crossing section is 326m, span is 20.59m, and the minimum of buried depth is only 4 m. A new subsurface construction method named as “interlaid rock wall” was especially proposed. The information technology was simultaneously introduced for assessing the stability of station during the tunneling. By introducing the new excavation method combined, the general stability of subway station was receivable, and the tunneling was more effective. Therefore, this method is very suitable for the kind of tunnel with shallow buried depth and large crossing section.

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