›› 2018, Vol. 32 ›› Issue (1): 93-94.

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Parameter Optimization of an Long Diagonal Cutting in the Tunnel Blasting Excavation

ZHAI Weijie1, ZHAO Qidalatu2, WU jie2, CHENG Kang1, MA Yongbin1   

  1. (1.School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China;
    2.China transportation construction group road and bridge Co. ltd., Shanghai 201203, China)
  • Received:2017-11-21 Revised:2017-12-05 Online:2018-02-20 Published:2018-03-01

Abstract: The long diagonal cutting has been widely used in the tunnel blasting excavations. The angle and length are the key parameters for a successful excavation. Throughout computer simulations and field tests, the optimized cutting angle of 70 degrees was obtained and it was verified to be an appropriate cutting parameter.

Key words: tunneling operation, long diagonal cutting, computer simulation, field tests