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2019 Vol.18, Issue 1 Preview Page

Research Article

Mechanical Mechanism of Main Tunnels and Cross Passage Construction - A 3D Numerical Investigation
Chungsik Yoo1
,
Shuaishuai Cui2*
,
Ke Wu3
,
Qianjn Zhang4
,
Zheng Zhang5
,
Jiahui Zhao6
,
,
,
,
,
1Member, Professor, School of Civil and Environmental Engineering, Sungkyunkwan Univ.
2Member, Graduate Student, School of Civil Engineering, Shandong University Qianfoshan Campus
3Nonmember, Professor, School of Civil Engineering, Shandong University Qianfoshan Campus
4Nonmember, Graduate Student, School of Civil Engineering, Shandong University Qianfoshan Campus
5Nonmember, Graduate Student, School of Civil Engineering, Shandong University Qianfoshan Campus
6Nonmember, Graduate Student, School of Civil Engineering, Shandong University Qianfoshan Campus
* Corresponding Author
30 March 2019. pp. 11-23
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Abstract

This paper presents the results of a three-dimensional numerical investigation into the mechanical mechanism of main tunnels and cross passage construction. Aimed at the complex space structure composed of two main tunnels and cross passage, 3D numerical model of the structure and surrounding rock was built to analyze the influence. Comparative analysis of different buried depths were carried out. The results of the study indicate that the stress concentration was occurred in the intersecting linings, especially in the opening side lining, which leads to an unfavorable form of force that is pulled up by the upper and lower sections in the intersecting linings due to the construction of the cross passage. The excavation of the cross passage also destroys the stability of the original soil layer and causes settlement of the surface and main tunnels. Practical implications of the findings are discussed.

Keywords
Cross passage
main tunnels
numerical simulation
construction mechanism

References
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Information
  • Publisher :Korean Geosythetics Society
  • Publisher(Ko) :한국지반신소재학회
  • Journal Title :Journal of the Korean Geosynthetics Society
  • Journal Title(Ko) :한국지반신소재학회 논문집
  • Volume : 18
  • No :1
  • Pages :11-23
  • Received Date : 2019-01-15
  • Revised Date : 2019-01-31
  • Accepted Date : 2019-03-11
  • DOI :https://doi.org/10.12814/jkgss.2019.18.1.011
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