›› 2015, Vol. 36 ›› Issue (S2): 623-628.doi: 10.16285/j.rsm.2015.S2.088

• Geotechnical Engineering • Previous Articles     Next Articles

Special effects of vibration caused by pile-well blasting in adjacent slope

LIAO Tao1, 2, PU Chuan-jin1, 2, YANG Xin1, 2, GUAN Shao-hua1, 2, GUO Wang-lin1, 2   

  1. 1. School of Environment and Resources, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China; 2. Non-Coal Mine Safety Technology Key Laboratory of Sichuan Province Colleges and Universities, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China
  • Received:2014-07-16 Online:2015-08-31 Published:2018-06-14

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Abstract: To study the propagation of seismic wave caused by pile-well blasting on the natural slope nearby, field test of vibration velocity is carried out during the excavation of pile-well blasting. Two measuring points are set on the step adjacent to the pile-well, one is on the foot of the slope, another is on the edge of step. The results show that the radial, vertical vibration velocities and the main frequency of measuring point on the edge of step have an increasing trend than ones on foot, slope effect appearing. While it has a decreasing trend in the tangential direction, illustrating that the changes of vibration velocity and frequency of blasting seismic wave are in consistency; and the amplification effect of blasting seismic wave has directionality; among them the vertical is the main. Slope effect explains the amplification effect of blasting seismic waves on the edge of step reasonably. Meanwhile, the analysis of blasting seismic wave frequency of "whiplash effect" verifies the reasonability of the slope effect.

Key words: pile-well blasting, blasting seismic wave, slope effect, whiplash effect

CLC Number: 

  • TD 235
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