PROPOSAL OF ANALYSIS METHOD FOR EVALUATING RISK OF FALLING ROCKS DUE TO UNEVENNESS OF TUNNEL FACE

• OKAZAKI Yasuyuki

  松江工業高等専門学校 環境・建設工学科

• HAYASHI Hisashi

  山口大学大学院 創成科学研究科

• TSUDA Yudai

  鹿島建設株式会社 九州支店

• TAMURA Daichi

  山口大学大学院 創成科学研究科建設環境系専攻

• AOKI Koichi

  株式会社熊谷組 土木事業本部

• SHINJI Masato

  山口大学大学院 創成科学研究科

Bibliographic Information

Other Title

• 切羽面の凹凸に起因する肌落ちリスク評価のための解析方法の提案

Abstract

 In tunnel construction by the mountain tunneling method, occupational accidents may occur due to falling rocks that occurs near tunnel face. Therefore, various evaluation methods for the risk of falling rocks have been proposed in consideration of occurrence factors of falling rocks. However, at present, no evaluation method has been proposed focusing on unevenness of tunnel surface, which is one of occurrence factors of falling rocks.  In this study, in order to propose an analysis method that can evaluate the risk of falling rocks due to the unevenness of tunnel face, a 3D numerical analysis model considering unevenness of tunnel face was generated by applying the voxel method to photogrammetric results of a tunnel face. And basic tunnel excavation analysis was carried out. As a result, it was clear that the analysis method proposed in this study is useful for evaluating the risk of falling rocks due to unevenness of tunnel face.

Journal

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

  Journal of Japan Society of Civil Engineers, Ser. F1 (Tunnel Engineering) 77 (1), 92-97, 2021

  Japan Society of Civil Engineers

Keywords

• tunnel face
• unevenness
• continuum approach
• 3D numerical analysis
• tunnel excavation

Details

• CRID: 1390008998107717504
• NII Article ID: 130008131458
• DOI: 10.2208/jscejte.77.1_92
• ISSN: 21856575
• Web Site: https://www.jstage.jst.go.jp/article/jscejte/77/1/77_92/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed