• Title, Summary, Keyword: Ground reenforcement

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Time-lapse 3-dimensional Seismic Study to Evaluate the Effect of Ground Reenforcement (지반보강 효과 평가를 위한 시차 3차원 탄성파 탐사)

  • Lee, Doo-Sung
    • Geophysics and Geophysical Exploration
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    • v.5 no.3
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    • pp.141-144
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    • 2002
  • Three-dimensional seismic data, recorded with an interval of one year, indicate a velocity changes in the medium at the near surface. During that period of a year, the ground reinforcement work has been conducted at the railroad base in the study area. The time-thickness to the first reflector of the two data were picked and compared. The result showed that the velocity of the medium decreased at large part of the study area; however, no velocity decrease at the railroad base.