›› 2007, Vol. 28 ›› Issue (9): 1883-1888.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Study of mechanical behavior and reinforcing measures of middle rock wall of parallel tunnel with small interval

YAO Yong1, 2, HE Chuan1, XIE Zhuo-xiong1   

  1. 1.Department of Tunnel and Underground Engineering, Southwest Jiaotong University, Chengdu 610031,China； 2.School of Civil Engineering, Southwest University of Science and Technology, Mianyang 621002,China
  • Received:2005-09-21 Online:2007-09-10 Published:2013-10-15

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Abstract: Applying 2D elastoplastic numerical calculation method and under the conditions of surrounding rocks of grades Ⅲ, Ⅳand Ⅴ, the characteristics of stress and deformation of middle rock wall in parallelly laid twin tunnel are studied. The findings show that the stress and deformation of middle rock wall are adverse due to the parallel tunnel with smaller interval; and these locations are very critical for design, construction and monitoring measurements. At the same time, the effects of different buried depths and different reinforcing measures of rock wall on stress and deformation of the tunnels with small interval, are also studied, so as to provide guidance for design of support, selection of excavation method, reinforcing method of rock wall and monitoring plans.

Key words: tunnel engineering, small interval, middle rock wall, mechanical behavior, reinforcing measures

CLC Number: 

  • TU 451
  • 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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