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Analysis of the Carbon Monoxide Released Law Caused by Shield Construction in Shallow Stratum in Sea Reclamation District

  • J. X. WangEmail author
  • B. P. Zou
  • X. J. Chen
  • J. Yi
  • G. L. Kuang
Conference paper
  • 1.9k Downloads
Part of the Springer Geology book series (SPRINGERGEOL)

Abstract

Carbon monoxide released in shallow stratum in sea reclamation district is a difficult problem in the process of shield construction. Based on carbon monoxide released in shallow stratum in the process of shield construction of Dengliang-Houhai section in Shenzhen Metro, this article analyzes the occurrence characteristics of carbon monoxide in shallow stratum from three respects in sea reclamation district, including geological conditions, reserving conditions, and occurrence structure. It also analyzes the disaster mechanism of carbon monoxide released in shallow stratum, and studies the carbon monoxide released law caused by shield construction from the dynamic and the static, including the rapid release, the slow release, the released volume concentration, and the pressure of gas bearing formation. The results show that the rapid release of carbon monoxide has a greater influence on the soil deformation compared with the slow release. The soil deformation is mainly elastic deformation, and the maximum occurs near the medial axis. The released volume concentration of carbon monoxide was relatively high from shield tail to trolley 5 under dynamic conditions, but it is large for internal soil chamber under static conditions.

Keywords

Sea reclamation district Shield tunnel Carbon monoxide Soil deformation 

Notes

Acknowledgments

The research work described herein is supported by the National Natural Science Foundation of China (No. 41072205, No.50579097), the Shanghai Natural Science Foundation of China (No. 10ZR1431500).

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • J. X. Wang
    • 1
    • 2
    Email author
  • B. P. Zou
    • 2
  • X. J. Chen
    • 3
  • J. Yi
    • 4
  • G. L. Kuang
    • 4
  1. 1.Key Laboratory of Geotechnical and Underground Engineering of Ministry of EducationTongji UniversityShanghaiChina
  2. 2.Department of Geotechnical EngineeringTongji UniversityShanghaiChina
  3. 3.College of Civil Engineering, Guilin University of TechnologyGuilinChina
  4. 4.China Tunnel Construction Co., Ltd.GuangzhouChina

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