NEW COSMIC RAY MUON TOMOGRAPHY FOR VISUALIZING INTERNAL OF RIVER EMBANKMENT
-
- NAMIKAWA Keigo
- 中央大学大学院 理工学研究科都市人間環境学専攻
-
- KOYAMA Naoki
- 中央大学研究開発機構
-
- KUSAGAYA Taro
- 日本電気株式会社
-
- SUZUKI Keiichi
- 川崎地質株式会社
-
- YAMADA Tadashi
- 中央大学研究開発機構
-
- YAMADA Tomohito
- 北海道大学大学院 工学研究院環境フィールド工学部門
Bibliographic Information
- Other Title
-
- 河川堤防の内部構造可視化に向けた新たな宇宙線ミューオントモグラフィ解析
Abstract
<p> We have succeeded in visualizing density distribution internal of river embankment, which is necessary for maintenance and quantitative evaluation of embankment failure risk, by using cosmic ray muon. However, conventional method can only evaluate density qualitatively because solution depends on initial value. In this study, we propose the new exploration method that introduces the Moore-Penrose inverse matrix, which uniquely determines the solution of underdetermined system of simultaneous equations, Tikhonov's regularization method, which suppresses effect of observation errors, and Morozov's contradiction principle, which determines regularization parameter. The results show good agreement between the analytical and actual ground densities. It is also found that when space of wave rays is less than 1/4 scale of analytical grid scale, it is possible to estimate location of structures and cavities in ground.</p>
Journal
-
- Japanese Journal of JSCE
-
Japanese Journal of JSCE 80 (16), n/a-, 2024
Japan Society of Civil Engineers
- Tweet
Keywords
Details 詳細情報について
-
- CRID
- 1390017843875004928
-
- ISSN
- 24366021
-
- Text Lang
- ja
-
- Data Source
-
- JaLC
- Crossref
-
- Abstract License Flag
- Disallowed