2021 Fiscal Year Final Research Report
Study on measurement technology to detect river bank and subsurface deformation simultaneously, accurately, and at low cost
| Project/Area Number |
19K04949
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 25030:Disaster prevention engineering-related
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| Research Institution | Okayama University |
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Principal Investigator |
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| Project Period (FY) |
2019-04-01 – 2022-03-31
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| Keywords | 河川巡視・点検 / 3次元計測 / レーザ点群 / グリーンレーザー / 河道計測 / 河川構造物 / 河床地形 / リアルタイム処理 |
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| Outline of Final Research Achievements |
1) Realization of mobile laser point group measurement system: A three-dimensional measurement system utilizing SLAM (Simultaneous Localization and Mapping) algorithm has been put into practical use.2) Development of real-time processing technology for 3D data: In combination with the method described in 1), it was demonstrated that laser point group processing software could be constructed to detect the location of deformation of river embankments and river structures in real time. 3) Utilization of green laser that penetrates water and enables measurement of riverbed: We verified the relationship between the water penetration capacity of a green laser with a wavelength of 515 nm and the transparency of rivers, and the water depth is up to about 1.5 times the depth that can be visually confirmed.
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| Free Research Field |
自然災害科学・防災学
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| Academic Significance and Societal Importance of the Research Achievements |
多発する豪雨による浸水被害に対処するため，河川のより一層詳細な点検作業が求められている．その一方で技術者不足や財政難に備えて，どのように点検作業を効率化するのかは重要な課題である．そこで，我が国が誇る最先端のICRT【ICT：Information and Communication Technology＋IRT：Information and Robot Technology】技術を活用した河川モニタリングの実現を図る研究を実施した．近年，中小河川での浸水・堤防決壊が相次いでおり，人材・財政不足が特に深刻化している自治体における河川管理の高精度化と高効率化に有用な技術になると考える．
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