›› 2007, Vol. 28 ›› Issue (6): 1275-1279.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Analysis of influence of blasting vibration on middle wall of a double-arch tunnel

SHI Ya-xin，WANG Ming-nian，LI Qiang   

  1. School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China
  • Received:2005-07-18 Online:2007-06-11 Published:2013-09-13

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Abstract: The double-arch tunnel is built usually by the full-face method under the condition of surrounding rock masses grade II and grade III. Vibration of blasting has been simulated and analyzed by three-dimensional numerical simulation during construction process of the double-arch tunnel; and the influence of blasting vibration on the middle wall of the double-arch tunnel caused by the rear tunnel is studied. The result indicates that the blasting of the rear tunnel creates much effect on the middle wall of the double-arch tunnel; there is a great need for protection to reduce disturbance of middle wall caused by blasting vibration; and temporary support will be destroyed.

Key words: vibration of blasting, double-arch tunnel, 3D-FEM, middle wall

CLC Number: 

  • U 451
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