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2008 Fiscal Year Final Research Report

Very high frequency seismology in deep South African gold mines - from1 cm to 200 m

Research Project

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Project/Area Number 18253003
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section海外学術
Research Field Solid earth and planetary physics
Research InstitutionThe University of Tokyo

Principal Investigator

MASAO Nakatani  The University of Tokyo, 地震研究所, 准教授 (90345174)

Co-Investigator(Kenkyū-buntansha) YOSHIDA Shingo  東京大学, 地震研究所, 教授 (20202400)
MIYAKE Hiroe  東京大学, 地震研究所, 助教 (90401265)
IGARASHI Toshihiro  東京大学, 地震研究所, 助教 (10334286)
KATO Aitaro  東京大学, 地震研究所, 助教 (20359201)
SANO Osamu  東京大学, 地震研究所, 教授 (20127765)
IIO Yoshihisa  京都大学, 防災研究所, 准教授 (50159547)
KAWAKATA Hironori  立命館大学, 理工学部, 准教授 (80346056)
OGAWASARA Hiroshi  立命館大学, 理工学部, 教授 (40213996)
IDE Satoshi  東京大学, 理学系研究科, 講師 (90292713)
SATO Takashi  産業技術総合研究所, 地質情報研究部門, 主任研究員 (90357161)
YABE Yasuo  東北大学, 理学系研究科, 助教 (30292197)
RAI Kyorin  産業技術総合研究所, 地質情報研究部門, 主任研究員 (70358357)
OTSUKI Kenshiro  東北大学, 理学系研究科, 教授 (70004497)
HIRAMATSU Yoshihiro  金沢大学, 自然科学研究科, 准教授 (80283092)
Research Collaborator NAOI Makoto  東京大学, 大学院・理学系研究科
永田 広平  東京大学, 大学院・理学系研究科
KATSURA Taishi  立命館大学, 理工学部
吉光 奈々  立命館大学, 理工学部
DRESEN Dresen  Helmholtz-Centre Potsdam - German Research Centre for Geosciences(GFZ), Germany, Department 3, Professor
STANCHITS Sergei  Helmholtz-Centre Potsdam - German Research Centre for Geosciences(GFZ), Germany, Department 3, Research Associate
PLENKERS Katrin  Helmholtz-Centre Potsdam - German Research Centre for Geosciences(GFZ), Germany, Department 3
KWIATEK Grzegorz  Helmholtz-Centre Potsdam - GermanResearch Centre for Geosciences(GFZ), Research Centre for Geosciences (GFZ), Germany, Department 3
PHILIPP Joachim  GMuG mbh., Germany, General manager and senior scientist
MOREMA Gilbert  Seismogen CC, Republic of South Africa, Director
WARD Tony  Seismogen CC, Republic of South Africa, Managing Director
ASWEGEN Gerrie Van  ISS International Ltd, Republic of South Africa, Head of Mining Division
CARSTENS Riaan  AngloGoldAshanti, Ltd, AngloGoldAshanti, Ltd, West Wits Regional Rock Engineering Manager
MILLER Clive  AngloGoldAshanti, Ltd, Republic of South Africa, Rock Engineering Manager of Mponeng Mine
Project Period (FY) 2006 – 2008
Keywords地震 / 大深度 / 鉱山 / 微小破壊 / AE / アコースティック・エミッション / 岩石力学 / スケーリング / 防災 / 国際貢献 / 大深度地下 / 地殻・マントル物質
Research Abstract

200kHz までをカバーする高感度振動センサによる微小破壊観測を, 世界で初めて大深度鉱山の硬岩中で展開し, 数百m の範囲にわたって, 微小破壊を観測することに成功した. 採掘やトンネル等でダメージを受けていない領域でも, 100kHz を超える地震波を放出するような, cm スケールの微小破壊が多数おこっていることを発見した. さらに, 数万個の微小破壊の分布は,周辺域の採掘による影響をうけて, 観測域の岩盤が100m 程度にわたってずれ変形をおこしたマグニチュード2 の地震の破壊面をくっきりと描きだした.

  • Research Products

    (13 results)

All 2009 2008

All Presentation (13 results)

  • [Presentation] Aftershock activity of an M2.1 earthquake in a deep South African gold mine observed by a high frequency seismic network2009

    • Author(s)
      Y. Yabe et.al.
    • Organizer
      IASPEI 2009 General Assembly, Jan
    • Place of Presentation
      Cape Town, RSA(13)
    • Year and Date
      20090000
  • [Presentation] JAGUARS project : Attenuation, scattering and instrumental effects of events recorded by a high-frequency network as seen from seismograms and their frequency content2009

    • Author(s)
      K. Plenkers et.al.
    • Organizer
      IASPEI 2009 General Assembly, Jan
    • Place of Presentation
      Cape Town, RSA(13)
    • Year and Date
      20090000
  • [Presentation] JAGUARS project : Frequency content of aftershocks of M2.1 events recorded with high-frequency network (100Hz f 170,000Hz)2009

    • Author(s)
      G. Kwiatek et.al.
    • Organizer
      IASPEI 2009 General Assembly, Jan
    • Place of Presentation
      Cape Town, RSA(13)
    • Year and Date
      20090000
  • [Presentation] Aftershock distribution of a M 2.1 earthquake near a geologic structure boundary in a deep South African gold mine2008

    • Author(s)
      M. Naoi et.al
    • Organizer
      mine, D American Geophysical Union fall meeting ec
    • Place of Presentation
      San Francisco, USA(17)
    • Year and Date
      20080000
  • [Presentation] Strain changes observed with two Ishii strainmeters within only m from an M . Fault located with Aes2008

    • Author(s)
      T. Katsura et.al
    • Organizer
      7th General Assembly of Asian Seismological Commission
    • Place of Presentation
      Tsukuba, Japan(Nov.26)
    • Year and Date
      20080000
  • [Presentation] AE activity prior to an M2.1 earthquake in a South African deep gold mine2008

    • Author(s)
      Y. Yabe et.al
    • Organizer
      7th General Assembly of Asian Seismological Commission
    • Place of Presentation
      Tsukuba, Japan(Nov.26)
    • Year and Date
      20080000
  • [Presentation] Acoustic Emission Measurements in a deep Gold Mine in South Africa ; Instrumental Setup and First Results (JAGUARS Project)2008

    • Author(s)
      J. Philipp et.al
    • Organizer
      European Geophyisical Union, General Assembly 2008
    • Place of Presentation
      Vienna, Austria(April 22)
    • Year and Date
      20080000
  • [Presentation] Very high frequency AE (up to 200 kHz) and micro seismicity observation in a deep South African gold mine -evaluation of the acoustic properties of the site by in-situtransmission test -2008

    • Author(s)
      M. Naoi et.al.
    • Organizer
      European Geophyisical Union, General Assembly 2008
    • Place of Presentation
      Vienna, Austria(April 21)
    • Year and Date
      20080000
  • [Presentation] Acoustic Emission Measurements in a deep Gold Mine in South Africa ; Spectral Analysis (JAGUARS-Project)2008

    • Author(s)
      K. Plenkers et.al.
    • Organizer
      European Geophyisical Union, General Assembly 2008
    • Place of Presentation
      Vienna, Austria(April 21)
    • Year and Date
      20080000
  • [Presentation] Acoustic emission measurements in a deep gold mine in South Africa - Project overview and some typical waveforms2008

    • Author(s)
      M. Nakatani et.al.
    • Organizer
      Seismological society of America, 2008 annual meeting
    • Place of Presentation
      Santa Fe, NM, USA(April 17)
    • Year and Date
      20080000
  • [Presentation] Very high frequency AE (200 kHz) and micro seismicity observations in a deep South African gold mine-Evaluation of acoustic properties of site by in-situ transmission test2008

    • Author(s)
      M. Naoi et.al.
    • Organizer
      Seismological society of America, 2008 annual meeting
    • Place of Presentation
      Santa Fe, NM, USA(April 17)
    • Year and Date
      20080000
  • [Presentation] JAGUARS-Project2008

    • Author(s)
      K. Plenkers et.al.
    • Organizer
      Spectral analysis of microseismicity and acoustic emmision in a deep South African gold mine
    • Place of Presentation
      Santa Fe, NM, USA(April 17)
    • Year and Date
      20080000
  • [Presentation] Introduction of JAGUARS Project-Acoustic Emission Measurements in Mponeng Gold Mine2008

    • Author(s)
      Y. Yabe et.al.
    • Organizer
      Dave Ortlepp memorial seminar on seismic rock mass response to mining
    • Place of Presentation
      Stellenbosch, South Africa(April 8)
    • Year and Date
      20080000

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Published: 2010-06-10   Modified: 2016-04-21  

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