三次元データ取得方法と,Levee川地表調査におけるその使用
Junko Kaneto1, Satoshi Nishiyama1, Keisuke Yoshida1
1Graduate School of Environmental, Life, Natural Science and Technology, Okayama University, Okayama 700-8530, Japan.
Sensors (Basel, Switzerland)
|February 13, 2026
まとめ
気候変動は堤防の損傷リスクを高めます. 新しい高空レーザースキャン法により,車両ベースのシステムとは異なり,構造全体にわたる詳細な変形を記録することにより,堤防のモニタリングを改善します.
科学分野:
- ジオテクニカルエンジニアリング ジオテクニカルエンジニアリング
- 環境監視 環境モニタリング
- リモートセンシング (リモートセンサー)
背景:
- 気候変動は極端な天候現象を増加させ,堤防の損傷や破裂を増加させている.
- 現在の堤防の整合性評価は,経験豊富なエンジニアによる主観的な視覚検査に依存しています.
- 堤防の異常を早期に検出するために,定量的な変形モニタリングが必要です.
研究 の 目的:
- 堤防監視における車両搭載レーザースキャン (MMS) の限界,特に盲点に対処するためです.
- 全面的な堤防表面データ取得のための高高度レーザー照射方法を提案し,評価する.
- 斜面と頂上を含む堤防の変形の正確な検出を可能にします.
主な方法:
- 完全な堤防表面データ収集のための最適なレーザー照射位置を調査しました.
- 高空レーザースキャンアプローチを開発・実装しました.
- 堤防構造の高密度レーザー点雲を取得しました.
主要な成果:
- 高空レーザー法では,堤防全体をカバーする濃い点雲データを得ることができました.
- 堤防の頂上と斜面の両方で詳細な変形が正確に検出されました.
- この方法は,従来の車両に搭載されたシステムの盲点の限界を克服します.
結論:
- 高空レーザースキャニングは,包括的な堤防整合性監視のための実用的で効果的なソリューションを提供します.
- この技術により,リスク管理に不可欠な堤防の変形を定量的に評価することができます.
- 堤防のモニタリングの改善は,気候変動の影響に対するインフラの回復力を高めるのに寄与します.
関連する概念動画
Topographic Surveying and Contours
1.0K
Topographic surveying is critical for documenting the Earth's surface, focusing on capturing elevations, slopes, and natural and man-made features. It is essential in construction planning, water resource management, and land-use analysis. The primary outcome of such surveys is a topographic map, which uses contour lines to visually represent the shape and slope of the terrain, providing valuable insights into the landscape's characteristics.Contour lines are fundamental to understanding the...
1.0K
Data Collection by Survey
9.1K
The systematic method of obtaining and analyzing accurate information of a population is called data collection. A survey is a standard method of data collection that involves collecting information from a target human population about their experience, opinion, or knowledge of a product, service, or process. The responses are recorded and interpreted. The most common survey examples are written questionnaires, face-to-face or telephonic conversations, focus groups, and electronic (e-mail or...
9.1K
Surveys
17.0K
Often, psychologists develop surveys as a means of gathering data. Surveys are lists of questions to be answered by research participants, and can be delivered as paper-and-pencil questionnaires, administered electronically, or conducted verbally. Generally, the survey itself can be completed in a short time, and the ease of administering a survey makes it easy to collect data from a large number of people.
17.0K
Introduction to Surveying, Plane Surveying and Geodetic Surveys
1.1K
Surveying is the art and science of mapping the earth's surface. It involves measuring distances, angles in horizontal or vertical directions, and levels to understand the shape and size of land features. Surveying techniques are essential for various tasks, such as identifying the levels of a land area with reference to a specific point, and mapping undulations and water bodies.There are two main types of surveying: plane surveys and geodetic surveys. Plane surveys assume the earth is flat,...
1.1K
Plotting of Topographic Maps
560
Topographic maps represent the Earth's surface features using contour lines, which connect points of equal elevation to create a two-dimensional representation of three-dimensional terrain. Creating a topographic map requires a systematic approach.Begin by plotting a scaled grid and marking intersections corresponding to the survey's elevation data points. Assign elevation values at these intersections to build the base map. Next, determine contour levels using a consistent contour interval,...
560
Errors and Mistakes in Surveying
743
Errors and mistakes in surveying refer to inaccuracies in measurements and data recording. The errors are deviations from the actual value caused by human sensory limitations, equipment flaws, or environmental effects. These errors are typically unintentional and can result from the inherent imperfections in the instruments used, atmospheric conditions, or the observer’s inability to perceive exact measurements. On the other hand, mistakes are caused by the surveyor's lack of...
743


