›› 2009, Vol. 30 ›› Issue (6): 1719-1725.

• Geotechnical Engineering • Previous Articles     Next Articles

Analytic hierarchy process of factor sensitivity on seepage control of underwater tunnel fissured surrounding rock

XU Jian-cong 1, 2，WANG Yu-fu 1, 2   

  1. 1. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China; 2. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China
  • Received:2007-12-03 Online:2009-06-10 Published:2011-03-09

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Abstract:

In order to evaluate each main factor influencing the seepage control of underwater tunnel fissured surrounding rock exactly, analytic hierarchy process is adopted, main factors influencing the seepage control of underwater-tunnel fissured surrounding rock are analyzed, and each weight is determined based on analyzing hydraulic characteristics of fissured medium combined with engineering experience. The results show that the mean width of fault fractured zones of surrounding rock and other ones per meter length of tunnel has the maximum weight, it is the uppermost ingredient influencing the seepage control of underwater tunnel fissured surrounding rock; it’s also influenced by water yield property of overlaying aquifer and the average number of surrounding rock gapping fissures per meter length of tunnel. In addition, after setting cavern location and its dimension and other parameters, the mean width of surrounding rock fault fractured zones and other ones per meter length of tunnel, the water yield property of overlaying aquifer and the average number of surrounding rock gapping fissures per meter length of tunnel are the main factors influencing the seepage control of underwater tunnel fissured surrounding rock. Furthermore, the research results may afford the scientific bases for the seepage control and disaster prevention of subsea tunnels, underground hydraulic seal oil storage rock caverns and other underwater tunnels.

Key words: tunnelling engineering, fissured surrounding rock, seepage control, analytic hierarchy process, sensitivity of influencing factor

CLC Number: 

  • U 455.49

中国博士后科学基金资助项目(No. 20060390165)；上海市博士后科研资助计划资助项目(No. 06R214152)。
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