Subsurface water-filled fracture detection by borehole radar: A case history

Sixin Liu, Motoyuki Sato

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Borehole radar is a special mode of Ground Penetrating Radar. It has several distinguished features from surface radar. For examples, by means of borehole access to regions below the surface, the antennas can be located relatively close to the anomalies or targets to be measured, resulting in more precise targets response in deep subsurface applications. The experimental site is located on the top of a granite hill west of Beijing. There are a group of boreholes intersected by many fractures; both single-hole and cross-hole measurements were carried out. The measured data are processed and interpreted. The radial detecting range is more than 30 meters at this site. The subsurface fracture distribution can be imaged very clearly. Many fractures can be "seen", and their distance from borehole and their dip angle can be determined. The azimuth determinations for these fractures are possible in some situations. It is concluded that the borehole radar is an effective tool for subsurface imaging.

Original languageEnglish
Title of host publicationProgress in Environmental and Engineering Geophysics
Subtitle of host publicationProceedings of the International Conference on Environmental and Engineering Geophysics, ICEEG 2004
EditorsC. Chen, J. Xia
Pages251-256
Number of pages6
Publication statusPublished - 2004 Dec 1
EventProgress in Environmental and Engineering Geophysics: Proceedings of the International Conference on Environmental and Engineering Geophysics, ICEEG 2004 - Wuhan, China
Duration: 2004 Jun 62004 Jun 9

Publication series

NameProgress in Environmental and Engineering Geophysics: Proceedings of the International Conference on Environmental and Engineering Geophysics, ICEEG 2004

Other

OtherProgress in Environmental and Engineering Geophysics: Proceedings of the International Conference on Environmental and Engineering Geophysics, ICEEG 2004
CountryChina
CityWuhan
Period04/6/604/6/9

Keywords

  • Borehole radar
  • Fracture
  • Subsurface imaging

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Liu, S., & Sato, M. (2004). Subsurface water-filled fracture detection by borehole radar: A case history. In C. Chen, & J. Xia (Eds.), Progress in Environmental and Engineering Geophysics: Proceedings of the International Conference on Environmental and Engineering Geophysics, ICEEG 2004 (pp. 251-256). (Progress in Environmental and Engineering Geophysics: Proceedings of the International Conference on Environmental and Engineering Geophysics, ICEEG 2004).