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Development of compact exploration equipments for MT method for predictive detection of landslide disasters

Research Project

Project/Area Number 19K04950
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 25030:Disaster prevention engineering-related
Research InstitutionKyushu University

Principal Investigator

Tanaka Toshiaki  九州大学, 工学研究院, 助教 (90294892)

Project Period (FY) 2019-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords土砂災害 / 地下水分布 / 比抵抗 / 電磁探査 / 探査装置 / 地下水 / MT法
Outline of Research at the Start

シミュレーションを用いて、土砂災害を引き起こす地下水分布を比抵抗変化により把握するために必要な仕様を決定し、小型MT探査装置を試作する。安価で高性能な最新の半導体を積極的に採用し、磁場の測定はインダクションコイルではなく小型の磁場センサを採用し、小型化を行う。探査装置の耐ノイズ性を高め測定精度を向上する。複数の探査装置をワイヤレスセンサネットワークで接続し、探査システムを構築する。浸透水の分布を測定し、探査装置の問題点を洗い出し、測定回路やソフトウェアに改良を加えて、実用的な小型MT探査装置を開発する。

Outline of Final Research Achievements

In steep slope areas, the risk of landslides increases when groundwater levels rise rapidly due to heavy rainfall. To detect rising groundwater levels at the ground surface, a compact MT method exploration equipment was developed, focusing on the change in the resistivity of the ground. The exploration equipment was emphasized for its portability and light weight. A prototype of the equipment was developed and its basic functions were tested in the laboratory and in the field. In the MT method, which measures electric and magnetic fields, noise from power lines can be an obstacle to measurement in both urban and mountainous areas. Therefore, based on the results of noise evaluation, an appropriate noise reduction circuit was added to the exploration equipment. As a result, it was confirmed that the electric and magnetic fields can be accurately measured.

Academic Significance and Societal Importance of the Research Achievements

急傾斜地などで発生する土砂災害は、地盤中の地下水の増加が原因の一つとして知られている。地下水の分布は、観測孔に設置した地下水位計などにより測定されることが多い。しかし、広範囲な地下水位変化をモニタリングするためには、多数の観測孔が必要になり、コストと労力が必要になる。そこで、地下水の分布によって変化する地下の比抵抗分布を地表からMT法により測定する。しかし、MT法の探査装置は一般に高価であるため小型の探査装置を開発した。その結果、多数の探査装置を同時に利用することで、精度良く地下水の分布の推定が可能となり、減災の一助となりうる。

Report

(6 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (19 results)

All 2023 2022 2021 2020 2019

All Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (18 results) (of which Int'l Joint Research: 6 results)

  • [Journal Article] Influence of geomagnetic storms on the quality of magnetotelluric impedance2022

    • Author(s)
      Chen Hao、Mizunaga Hideki、Tanaka Toshiaki
    • Journal Title

      Earth, Planets and Space

      Volume: 74 Issue: 1

    • DOI

      10.1186/s40623-022-01659-6

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 超低周波磁場測定のためのMIセンサの改良2023

    • Author(s)
      田中俊昭、水永秀樹、橋本幸治、古川浩幸、小野寺真也
    • Organizer
      物理探査学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] MT法の常識と非常識2023

    • Author(s)
      水永秀樹、田中俊昭、橋本幸治
    • Organizer
      物理探査学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 小型MT探査装置によるフィールド実験(1):九州大学伊都キャンパス2023

    • Author(s)
      橋本幸治、水永秀樹、田中俊昭、平瀬敬司
    • Organizer
      日本地熱学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 小型MT探査装置によるフィールド実験(2):大分県久住高原2023

    • Author(s)
      水永秀樹、田中俊昭、橋本幸治、平瀬敬司
    • Organizer
      日本地熱学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 小型MT探査装置によるフィールド実験(3):宮崎県えびの高原2023

    • Author(s)
      田中俊昭、水永秀樹、橋本幸治、平瀬敬司
    • Organizer
      日本地熱学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 小型軽量装置を活用したMT探査装置の高度化(1):プロジェクトの概要2022

    • Author(s)
      水永秀樹・田中俊昭・橋本幸治・小野寺真也
    • Organizer
      日本地熱学会
    • Related Report
      2022 Research-status Report
  • [Presentation] 小型軽量装置を活用したMT探査装置の高度化(2):測定装置の設計と試作2022

    • Author(s)
      田中俊昭・水永秀樹・橋本幸治・小野寺真也
    • Organizer
      日本地熱学会
    • Related Report
      2022 Research-status Report
  • [Presentation] 小型軽量装置を活用したMT探査装置の高度化(3):文献調査およびアンケート調査2022

    • Author(s)
      橋本幸治・水永秀樹・田中俊昭・小野寺真也
    • Organizer
      日本地熱学会
    • Related Report
      2022 Research-status Report
  • [Presentation] 小型軽量装置を活用したMT探査手法の高度化(1):プロジェクトの概要2022

    • Author(s)
      水永秀樹・田中俊昭・橋本幸治・小野寺真也
    • Organizer
      物理探査学会
    • Related Report
      2022 Research-status Report
  • [Presentation] 小型軽量装置を活用したMT探査手法の高度化(2): ハードウェアの設計と試作2022

    • Author(s)
      田中俊昭・水永秀樹・橋本幸治・小野寺真也
    • Organizer
      物理探査学会
    • Related Report
      2022 Research-status Report
  • [Presentation] Example of application of a new MT time series processing method2021

    • Author(s)
      Kazuto INOUE, Hao CHEN, Toshiaki TANAKA, Hideki MIZUNAGA
    • Organizer
      International Symposium on Earth Science and Technology 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Application of a new robust impedance estimator based on Hilbert-Huang transform for magnetotelluric method2021

    • Author(s)
      Hao Chen, Hideki Mizunaga, Toshiaki Tanaka , Gang Wang and Maik Neukirch
    • Organizer
      International Symposium on Earth Science and Technology 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Comparing the bound influence and maximum likelihood magnetotelluric response function estimator2021

    • Author(s)
      Hao Chen・Hideki Mizunaga・Toshiaki Tanaka・Gang Wang
    • Organizer
      物理探査学会第144回学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] Subsurface characterization using geophysical and hydrochemical data: An application to groundwater resource management in Pampanga, Philippines2020

    • Author(s)
      Casulla Mel Anthony Asis, Hideki Mizunaga, Toshiaki Tanaka, Torres Aniano
    • Organizer
      International Symposium on Earth Science and Technology 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] New strategy to calculate robust impedance using RMHHT estimator for continuous and discontinuous broadband magnetotelluric time-series data2020

    • Author(s)
      Hao Chen, Hideki Mizunaga, Toshiaki Tanaka, Gang Wang
    • Organizer
      International Symposium on Earth Science and Technology 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] The research on the application of Hilbert-Huang Transformation to time series magnetotelluric data2019

    • Author(s)
      Hao Chen, Hideki Mizunaga, Toshiaki Tanaka
    • Organizer
      International Symposium on Earth Science and Technology 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Development of Magnetotelluric 1-D Sparse Inversion2019

    • Author(s)
      Yosuke Kiyomoto, Hideki Mizunaga, Toshiaki Tanaka
    • Organizer
      International Symposium on Earth Science and Technology 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] MT法の1-Dスパースインバージョン2019

    • Author(s)
      清元 陽介・水永 秀樹・田中 俊昭
    • Organizer
      物理探査学会第141回学術講演会
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2025-01-30  

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