Geomechanics and Engineering

  • 제15권6호
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  • Pages.1227-1236
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  • 2018
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  • 2005-307X(pISSN)
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  • 2092-6219(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

New methodology to prevent blasting damages for shallow tunnel

  • Ozacar, Vehbi (Dokuz Eylul University, Torbali Technical Vocational School)
  • 투고 : 2018.02.15
  • 심사 : 2018.03.02
  • 발행 : 2018.08.30
⟨ 이전 논문 다음 논문 ⟩

초록

From all of the environmental problems, blast-induced vibrations often cause concern to surrounding residents. It is often claimed that damage to building superstructures is due to blasting, and sometimes the building owner files a lawsuit against the company that perform blasting operations. The blast-vibration problem has been thoroughly investigated in the past and continues to be the subject of ongoing research. In this study, a tunnel construction has been performed by a construction company, according to their contract they must have used drilling & blasting method for excavation in tunnel inlet and outlet portal. The population is very condensed with almost tunnel below in the vicinity houses of one or two floors, typically built with stone masonry and concrete. This situation forces the company to take extreme precautions when they are designing blasts so that the blast effects, which are mainly vibration and aerial waves, do not disturb their surrounding neighbors. For this purpose, the vibration measurement and analysis have been carried out and a new methodology in minimizing the blast induced ground vibrations at the target location, was also applied. Peak particle velocity and dominant frequencies were taken into consideration in analyzing the blast-induced ground vibration. The methodology aims to employ the most suitable time delays among blast-hole groupings to render destructive interference of surface waves at the target location.

키워드

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피인용 문헌

  1. Optimization Analysis of Controlled Blasting for Passing through Houses at Close Range in Super-Large Section Tunnels vol.2019, pp.None, 2019, https://doi.org/10.1155/2019/1941436
  2. Dynamic stability analysis of rock tunnels subjected to impact loading with varying UCS vol.24, pp.6, 2018, https://doi.org/10.12989/gae.2021.24.6.505
  3. Investigation of blasting impact on limestone of varying quality using FEA vol.25, pp.2, 2018, https://doi.org/10.12989/gae.2021.25.2.111