Estimating the Planar Position of Underground ExcavationsThrough Seismic Method

Document Type : Original Article

Authors

1 ihu

2 IHU

Abstract

Seismic methods have gained significant attention for locating seismic sources caused by large explosions and enhancing the signal-to-noise ratio. Most studies focus on large-scale scenarios where the seismic source is assumed to be far from the seismic array. In military applications, underground excavations are often conducted to create passages for transferring forces and equipment. Hence, seismic methods can be employed to determine the location of such excavations as seismic sources. This study investigates the feasibility of estimating the planar position of low-energy underground excavations, which are not detectable using conventional seismic techniques. To this end, a tool based on triangular seismic arrays is developed, and a simple mechanism utilizing cross-correlation analysis is proposed for estimating the planar position of the source. The efficiency of this method is compared with existing approaches. Since the received signals are significantly affected by local noise due to the low energy of the source, a noise reduction algorithm based on the similarity of received signals is introduced, yielding favorable results compared to conventional methods.

Keywords

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References

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History

  • Receive Date: 27 June 2023
  • Revise Date: 07 October 2023
  • Accept Date: 21 December 2023
  • Publish Date: 21 July 2025

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