A study of the feasibility of monitoring sealed geological repositories using seismic sensors

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Questions have arisen regarding the applicability of seismic sensors to detect mining (re-entry) with a tunnel boring machine (TBM). Unlike cut and blast techniques of mining which produce impulsive seismic signals, the TBM produces seismic signals which are of long duration. (There are well established techniques available for detecting and locating the sources of the impulsive signals.) The Yucca Mountain repository offered an opportunity to perform field evaluations of the capabilities of seismic sensors because during much of 1996, mining there was progressing with the use of a TBM. During the mining of the repository`s southern branch, an effort was ... continued below

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18 p.

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Garbin, H.D.; Herrington, P.B. & Kromer, R.P. October 1, 1997.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

Questions have arisen regarding the applicability of seismic sensors to detect mining (re-entry) with a tunnel boring machine (TBM). Unlike cut and blast techniques of mining which produce impulsive seismic signals, the TBM produces seismic signals which are of long duration. (There are well established techniques available for detecting and locating the sources of the impulsive signals.) The Yucca Mountain repository offered an opportunity to perform field evaluations of the capabilities of seismic sensors because during much of 1996, mining there was progressing with the use of a TBM. During the mining of the repository`s southern branch, an effort was designed to evaluate whether the TBM could be detected, identified and located using seismic sensors. Three data acquisition stations were established in the Yucca Mountain area to monitor the TBM activity. A ratio of short term average to long term average algorithm was developed for use in detection based on the characteristics shown in the time series. For location of the source of detected signals, FK analysis was used on the array data to estimate back azimuths. The back azimuth from the 3 component system was estimated from the horizontal components. Unique features in the timing of the seismic signal were used to identify the source as the TBM.

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18 p.

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INIS; OSTI as DE98000171

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  • International Atomic Energy Agency symposium on international safeguards, Vienna (Austria), 13-17 Oct 1997

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  • Other: DE98000171
  • Report No.: SAND--97-2090C
  • Report No.: IAEA-SM--351/140;CONF-971031--
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 633995
  • Archival Resource Key: ark:/67531/metadc696276

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Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • October 1, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • May 5, 2016, 8:17 p.m.

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Garbin, H.D.; Herrington, P.B. & Kromer, R.P. A study of the feasibility of monitoring sealed geological repositories using seismic sensors, article, October 1, 1997; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc696276/: accessed September 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.