Influence Analysis of Drainage Mode on the Karst Tunnel Lining under High Water Pressure

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Authors

  • Yanna Ma
     Hunan City University, Yi Yang, Hunan 413 000 ,CN
  • Junsheng Yang
     Central South University, School of Civil Engineering, Changsha, Hunan 410 075 ,CN
  • Yiming Wang
     Zhengzhou Municipal Engineering Survey and Design Research Institute, Zhengzhou Henan 450 046 ,CN
  • Yongsuo Li
     Hunan City University, Yi Yang, Hunan 413 000 ,CN

Keywords:

Karst Tunnel, Tunnel Drainage, Tunnel Lining Water Pressure, Drainage Ditch under Invert Arch.

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.

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Published

2022-10-19

How to Cite

Ma, Y., Yang, J., Wang, Y., & Li, Y. (2022). Influence Analysis of Drainage Mode on the Karst Tunnel Lining under High Water Pressure. Journal of Mines, Metals and Fuels, 64(12), 579–584. Retrieved from http://www.informaticsjournals.com/index.php/jmmf/article/view/31616

Issue

Volume 64, Issue 12, December 2016

Section

Articles

License

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

 

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