ISSN 2096-4498

   CN 44-1745/U

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Analysis on Ground Surface Deformation of Mined Metro  Station Constructed by PBA Method in Beijing

  • LUO Furong ,
  • WANG Yuhua
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  • (1. Beijing MTR Construction Administration Corporation, Beijing 100037, China;  2. Survey, Design and Research Institute of China Railway Tunnel Group, Luoyang 471009, Henan, China)

Received date: 2015-07-20

  Revised date: 2015-11-17

  Online published: 2016-02-01

Abstract

Metro stations are basically located in urban centers, thus the surrounding environments of the project is significantly complicated. In this context, ground surface settlement induced by construction of the Metro station is studied with respect to its influence on the surrounding environments, in order to select a rational settlementcontrol method. The monitoring data of mined Metro stations of Line No. 7 and Phase 1 of Line No. 6 of Beijing Metro are obtained for detailed analyses. The results show that: 1) The ground surface settlement induced by construction of heading and tunnel arch is of a large magnitude, accounting for 90% of the total settlement; 2) The settlement of different strata excavated by PBA method significantly varies. The settlement of finesilt and mediumcoarse sand strata is the largest, followed by that of silt and silty clay strata, and that of sandycobble strata is the smallest.

Cite this article

LUO Furong , WANG Yuhua . Analysis on Ground Surface Deformation of Mined Metro  Station Constructed by PBA Method in Beijing[J]. Tunnel Construction, 2016 , 36(1) : 20 -26 . DOI: 10.3973/j.issn.1672-741X.2016.01.003

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