A Comparison of Ground Vibration in Center Cut Blasting using Artificial Joints

인공절리를 이용한 심발 발파에서의 지반진동 비교

  • Received : 2018.11.29
  • Accepted : 2018.12.10
  • Published : 2018.12.31

Abstract

In order to reduce ground vibration during tunnel excavation, a free surface blasting method has been applied in which a partial free surface is formed on the excavation surface and controlled blasting is performed. In this study, the ground vibration reduction due to artificial joints was evaluated by forming artificial joints on center cut using diamond wire saw and comparing the ground vibration caused by center cut blasting. As a result of comparison, ground vibration was reduced by artificial joints center cut blasting more than normal center cut blasting, and the ground vibration reduction effect of horizontal artificial joints center cut blasting was evaluated more than that of vertical artificial joint center cut blasting.

Acknowledgement

Supported by : 국토교통과학기술진흥원, 한국연구재단

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