List of products by author: H. J. Zhang

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  A case study on construction method of four-line tunnel in weak rock

  Abstract: In China, there is a railway station extended into a tunnel with 547m, which located in secondary line from Liupanshui to Zhanyi. So a large span tunnel with four lines formed. Its largest excavation span reaches 28.42m, and the maximum cross-section area is 354.30m. This paper took this case studied. It is suggested to divide the tunnel to three sections as portal section, shallow buried...

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