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Influence analysis of drainage mode on the karst tunnel lining under high water pressure.

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Title: Influence analysis of drainage mode on the karst tunnel lining under high water pressure.
Authors: YANNA MA1,2, JUNSHENG YANG1,3, YIMING WANG3, YONGSUO LI2
Source: Journal of Mines, Metals & Fuels. Dec2016, Vol. 64 Issue 12, p579-584. 6p.
Subject Terms: *WATER pressure, *WATERSHEDS, *TUNNEL lining, *TUNNEL design & construction, *FINITE difference method
Abstract: In order to avoid lining cracking caused by high water pressure deformation and damage of the disease, the lining water pressure of many domestic karst tunnels are summed up, showing that the tunnel drainage is the main factor causing the high lining water pressure. For a passenger line tunnel, the numerical calculation model of finite difference method FLAC2D is established. It analyzes the characteristics of tunnel lining water pressure under side wall corner drainage mode of ditch at "two side ditch + center ditch", pointing out that the invert arch pressure is huge and the lining safety is low under the condition of high pressure and rich water and drainage mode of "two side ditch + center ditch". In order to improve the safety and reduce the water pressure, the drainage sheme of the drainage ditch under the inverted arch is proposed and the water pressure of the tunnel lining is calculated and analyzed. The analysis shows that the drainage ditch can effectively reduce the water pressure of the inverted arch, which can improve the safety of the tunnel structure through the drainage ditch under the invert of the high pressure water rich karst tunnel. [ABSTRACT FROM AUTHOR]
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  Label: Title
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  Data: Influence analysis of drainage mode on the karst tunnel lining under high water pressure.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22YANNA+MA%22">YANNA MA</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22JUNSHENG+YANG%22">JUNSHENG YANG</searchLink><relatesTo>1,3</relatesTo><br /><searchLink fieldCode="AR" term="%22YIMING+WANG%22">YIMING WANG</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22YONGSUO+LI%22">YONGSUO LI</searchLink><relatesTo>2</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Mines%2C+Metals+%26+Fuels%22">Journal of Mines, Metals & Fuels</searchLink>. Dec2016, Vol. 64 Issue 12, p579-584. 6p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22WATER+pressure%22">WATER pressure</searchLink><br />*<searchLink fieldCode="DE" term="%22WATERSHEDS%22">WATERSHEDS</searchLink><br />*<searchLink fieldCode="DE" term="%22TUNNEL+lining%22">TUNNEL lining</searchLink><br />*<searchLink fieldCode="DE" term="%22TUNNEL+design+%26+construction%22">TUNNEL design & construction</searchLink><br />*<searchLink fieldCode="DE" term="%22FINITE+difference+method%22">FINITE difference method</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: In order to avoid lining cracking caused by high water pressure deformation and damage of the disease, the lining water pressure of many domestic karst tunnels are summed up, showing that the tunnel drainage is the main factor causing the high lining water pressure. For a passenger line tunnel, the numerical calculation model of finite difference method FLAC2D is established. It analyzes the characteristics of tunnel lining water pressure under side wall corner drainage mode of ditch at "two side ditch + center ditch", pointing out that the invert arch pressure is huge and the lining safety is low under the condition of high pressure and rich water and drainage mode of "two side ditch + center ditch". In order to improve the safety and reduce the water pressure, the drainage sheme of the drainage ditch under the inverted arch is proposed and the water pressure of the tunnel lining is calculated and analyzed. The analysis shows that the drainage ditch can effectively reduce the water pressure of the inverted arch, which can improve the safety of the tunnel structure through the drainage ditch under the invert of the high pressure water rich karst tunnel. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Mines, Metals & Fuels is the property of Books & Journal Private Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 6
        StartPage: 579
    Subjects:
      – SubjectFull: WATER pressure
        Type: general
      – SubjectFull: WATERSHEDS
        Type: general
      – SubjectFull: TUNNEL lining
        Type: general
      – SubjectFull: TUNNEL design & construction
        Type: general
      – SubjectFull: FINITE difference method
        Type: general
    Titles:
      – TitleFull: Influence analysis of drainage mode on the karst tunnel lining under high water pressure.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: YANNA MA
      – PersonEntity:
          Name:
            NameFull: JUNSHENG YANG
      – PersonEntity:
          Name:
            NameFull: YIMING WANG
      – PersonEntity:
          Name:
            NameFull: YONGSUO LI
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 12
              Text: Dec2016
              Type: published
              Y: 2016
          Identifiers:
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              Value: 00222755
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              Value: 64
            – Type: issue
              Value: 12
          Titles:
            – TitleFull: Journal of Mines, Metals & Fuels
              Type: main
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