ISSN 2096-4498

   CN 44-1745/U

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Tunnel Construction ›› 2011, Vol. 31 ›› Issue (S2): 108-112.

• wenzhang • Previous Articles     Next Articles

Construction Technology of Entrance of Supershallowcovered  Metro Tunnel Crossing Underneath Existing Building

PENG Changhai   

  1. (Beijing Construction Co., Ltd. of China Railway Tunnel Group, Beijing 100022, China)
  • Received:2011-08-01 Revised:2011-09-10 Online:2011-11-20 Published:2011-12-29

Abstract: The No.1 entrance of Xietaizi station on Chongqing Metro line 1, crosses underneath existing twofloored building, is shallowcovered. The construction is with great difficulty and short construction scheme. Static blasting technology is used in excavation, and technologies such as large piperoof, advance small duct supporting, grouting at tunnel face, radial grouting and following grouting in tunnel are adopted. In the end, the construction has made a great success.

Key words: mining method, shallowburied tunnel, cross underneath building, static blasting, grouting technology