JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2009, Vol. 39 ›› Issue (4): 12-16.

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The mechanism and prevention technology of the inrush  water disaster warning of karst tunnels

  

  1. MA Shi-Wei, ZHANG Jun-Wei, DU Jun：China Academy of Railway Sciences, Beijing 100081, China;  MEI Zhi-Rong：China Railway Southwest Research Institute, Chengdu 610031, China
  • Received:2009-05-20 Online:2009-08-24 Published:2009-08-24

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Abstract:

The formation and occurrence of inrush water disaster of karst tunnels must have four basic conditions: special geological structure, sufficient filled material, abundant groundwater resources and manmade excavation disturbance. A three-grade monitoring warning scheme of inrush water disaster of karst tunnels was first presented  based on the analysis of water pressure, water quality, rock displacement, and stress of steel arches. Then, the inrush water disaster warning system of karst tunnels was also developed. In-situ experimental results in the Liuyang River tunnel of Wuhan-Guangzhou railway and the  Dazhiping tunnel of the Yichang-Wanzhou railway showed that, the inrush water disaster warning system of karst tunnels adapts well to the complicated environment  with good stability. Popularization and application of the system are conducive to safe construction of large tunnel. Finally, the regulation principle of inrush water disaster of karst tunnels was presented.

Key words: karst tunnel;  inrush water; warning system; prevention technology

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