›› 2006, Vol. 27 ›› Issue (S1): 377-380.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Research on mechanical behaviour and construction schemes of rock tunnel adjacent to existing road tunnel

LI Wen-jiang1，2，ZHU Yong-quan2，LIU Zhi-chun2   

  1. 1. Civil Engineering，Southwest Jiaotong University，Chengdu 610031，China； 2. School of Civil Engineering，Shijiazhuang Railway Institute，Shijiazhuang 050043，China
  • Received:2006-06-28 Published:2006-12-15

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Abstract: Guantouling tunnel is the key project of Wenzhou-Fuzhou railway line. With 36 degree of planar angle，it crosses under Tong-San expressway tunnel. The space between the crown of building tunnel and the floor of existing tunnel is only 2.91 meter. Based on the fact of construction，the mechanical behaviour of rock tunnel excavated adjacent existing road tunnel is studied by 3D finite element numerical simulation method. The research demonstrates that deformation of surrounding rock and the disadvantage distribution of structure stress of the existing tunnel are remarkable. Therefore，it is necessary to take some reinforcement measures to guarantee safety of adjacent existing tunnel. According to the results of numerical simulation，the excavating method，support parameters，measures of vibration reduction and vibration isolation during construction are analyzed and discussed.

Key words: rock tunnel, close-space construction, numerical simulation, construction schemes

CLC Number: 

  • U 455
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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