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Development of a simple identification system for floating dust containing acicular material

Research Project

Project/Area Number 18K04635
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 25020:Safety engineering-related
Research InstitutionYamaguchi University

Principal Investigator

SHINJI MASATO  山口大学, 大学院創成科学研究科, 教授 (40335766)

Co-Investigator(Kenkyū-buntansha) 林 久資  山口大学, 大学院創成科学研究科, 助教 (30633614)
Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords安全工学 / トンネル工学 / 土木工学 / 施工環境測定 / 浮遊粉じん測定 / 建設環境システム / 針状浮遊物質 / 簡易計測法
Outline of Final Research Achievements

The good working environment during tunnel construction is an extremely important research issue. In this study, we focused on dust measurement among the working environment items and investigated a simple method to detect and quantify needle-like minerals such as asbestos, which require special handling. Based on the principle of Mie scattering of floating dust, previous research has shown that the polarization of scattered light at 170 degrees, which is close to backscattering, differs greatly between cylindrical particles and spherical particles. We have developed a method for the identification of suspended needle-like particles by obtaining scattered light images that are unique to asbestos due to its needle-like shape. For this purpose, we used laser light and flash light with short wavelengths as light sources, and also worked on methods for identifying dust in images taken by AI and discriminating asbestos.

Academic Significance and Societal Importance of the Research Achievements

アスベストは,極めて細い針状の無機繊維鉱物である.この物質を多量に吸引すると,肺胞深部に蓄積され,中皮腫や肺機能障害などの健康被害の原因となる.また,アスベストを産出する岩石であるクリソタイルを有する蛇紋岩中を掘削するトンネル工事では,針状浮遊粉じんの発生の有無は工事進行に大きな影響を及ぼし,従来のガイドラインに基づく単位空間あたりの粉じん重量の規制だけではなく,単位空間あたりの本数の規制であるアスベストの飛散防止に関する規制を順守する必要が生じ,トンネル建設工事を安全に進めるには極めて大きな影響を及ぼす.そのため,簡便にアスベスト浮遊の有無を識別できる計測手法の開発が望まれている.

Report

(5 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (14 results)

All 2022 2020 2019 2018

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 1 results) Presentation (8 results)

  • [Journal Article] SIMULATION OF CHRONOLOGICAL CHANGE IN DUST CONCENTRATION DURING TUNNEL CONSTRUCTION BY UNSTEADY CFD ANALYSIS2022

    • Author(s)
      掛谷幸士朗,林久資,鷹屋光俊,山田丸,大塚輝人,吉川直孝,進士正人
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. F1 (Tunnel Engineering)

      Volume: 78 Issue: 1 Pages: 13-25

    • DOI

      10.2208/jscejte.78.1_13

    • ISSN
      2185-6575
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Study on Application of Simple Dust Sensor to Tunnel Construction Site2020

    • Author(s)
      K. KAKEYA , H. HAYASHI , T. OTSUKA , K. NAKAMURA , M. SHINJI
    • Journal Title

      Prof. of he ITA-AITES World Tunnel Congress, WTC2020 and 46th General Assembly Kuala Lumpur, Malaysia

      Volume: -

    • NAID

      130007809336

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] トンネル建設現場における多点粉じん濃度測定のための簡易粉じん測定器の適用2020

    • Author(s)
      掛谷幸士朗,林久資,進士正人
    • Journal Title

      建設機械

      Volume: 56,10号 Pages: 53-58

    • NAID

      40022360830

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] 簡易粉じん測定器のトンネル建設現場での 環境測定への適用に関する研究2020

    • Author(s)
      掛谷幸士朗,林久資,進士正人
    • Journal Title

      建設機械施工

      Volume: 72 Pages: 72-77

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] STUDY ON APPLICATION OF SIMPLE DUST SENSOR TO TUNNEL CONSTRUCTION SITE2019

    • Author(s)
      KAKEYA Koshiro、HAYASHI Hisashi、OTSUKA Teruhito、NAKAMURA Kenji、SHINJI Masato
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. F1 (Tunnel Engineering)

      Volume: 75 Issue: 2 Pages: I_12-I_19

    • DOI

      10.2208/jscejte.75.2_I_12

    • NAID

      130007809336

    • ISSN
      2185-6575
    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] WIND TUNNEL EXPERIMENTS ON DUST COLLECTION EFFICIENCY OF A MOUNTAIN TUNNEL UNDER CONSTRUCTION2018

    • Author(s)
      酒井健二,小林大輝,谷純平,森本真吾,進士正人
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. F1 (Tunnel Engineering)

      Volume: 74 Issue: 1 Pages: 15-24

    • DOI

      10.2208/jscejte.74.15

    • NAID

      130006743043

    • ISSN
      2185-6575
    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] カメラ動画像を用いたトンネル坑内の粉じん濃度計測システム開発に向けた基礎的検討2022

    • Author(s)
      田中亨昌,中島伸一郎,林久資,進士正人,岸田展明
    • Organizer
      令和4年度土木学会中国支部研究発表会 Ⅵ-3
    • Related Report
      2021 Annual Research Report
  • [Presentation] 3次元流体解析による多点・多頻度粉じん濃度測定の提案2020

    • Author(s)
      掛谷幸士朗,林久資,進士正人
    • Organizer
      土木学会,第30回トンネル工学研究発表会,報告I-37
    • Related Report
      2020 Research-status Report
  • [Presentation] 簡易粉じん測定器によるトンネル坑内の多点粉じん濃度測定のための基礎研究2020

    • Author(s)
      掛谷幸士朗,林久資,進士正人
    • Organizer
      令和2年度土木学会全国大会第75回年次学術講演会(VI-487)
    • Related Report
      2020 Research-status Report
  • [Presentation] トンネル建設現場における簡易粉じん濃度測定器の適用性の検討2020

    • Author(s)
      掛谷幸士朗,林久資,進士正人
    • Organizer
      令和2年度第72回土木学会中国支部研究発表会(Ⅶ-1)
    • Related Report
      2020 Research-status Report
  • [Presentation] トンネル建設現場における粉じん濃度測定への簡易粉じん濃度測定器の適用性の検討2019

    • Author(s)
      掛谷幸士朗,林久資,進士正人
    • Organizer
      土木学会第75回年次学術講演会講演概要集
    • Related Report
      2019 Research-status Report
  • [Presentation] トンネル建設現場における簡易粉じん濃度測定器の適用2019

    • Author(s)
      掛谷幸士朗,林久資,進士正人
    • Organizer
      土木学会中国支部研究発表会
    • Related Report
      2019 Research-status Report
  • [Presentation] トンネル工事における通風換気システム評価のための中規模実験2018

    • Author(s)
      酒井健二,岸田展明,中村憲司,大塚輝人,進士正人
    • Organizer
      土木学会第28回トンネル工学研究発表会「報告Ⅰ-48」
    • Related Report
      2018 Research-status Report
  • [Presentation] トンネル工事における通風管理システム評価2018

    • Author(s)
      大塚輝人,酒井健二,片谷篤史,岸田展明,中村憲司,板垣晴彦,進士正人
    • Organizer
      安全工学会第51回安全工学研究発表会
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2023-01-30  

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