It is possible to obtain the shapes of the seabed, lakebed, riverbed, etc., as 3D point cloud data.
"Multi-beam bathymetric surveying" uses a "multi-beam echo sounder" that emits sound waves in a fan shape to conduct area-based measurements (swath bathymetry), allowing for the measurement of the seafloor, lakebed, riverbed, etc., as 3D point cloud data, and enables the determination of 3D shapes and changes. It can measure vast areas in a short time, and because it can measure terrains between survey lines that were difficult with single-beam echo sounders, detailed contour maps can be created. 【Features】 - The echo sounder is the "iWBMSH" multi-beam echo sounder manufactured by NORBIT. - The sonar adopts a curved array method, allowing the swath width to be changed arbitrarily between 7° and 210°. - The sonar, motion sensor, and surface sound velocity meter are integrated, making the onboard equipment compact, resulting in fewer wiring connections, reduced installation time, and improved safety during onboard operations. - The bathymetric sonar is mounted on the side of the survey vessel. It can be installed on small outboard motor boats or vessels weighing around 20 tons using single pipe and dedicated fixtures. - A terrestrial 3D laser scanner "iLIDER" is used to simultaneously measure the land portion. *For more details, please refer to the PDF document or feel free to contact us.
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basic information
【Multi-beam (iWBMSh) Specifications】 ■ Swath Width: 7-210° (Shallow Water IHO Special Order > 155°) ■ Depth Resolution: <10mm (Acoustic) ■ Number of Beams: 256-512 EA & ED ■ Depth Range: 0.2-275m (160m Typical) 【3D Laser Scanner (iLiDER) Specifications】 ■ Measurement Range: 30° VER, 360° HOR ■ Range: 100m *For more details, please refer to the PDF document or feel free to contact us.
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Applications/Examples of results
【Target Structures (Examples)】 ■ Precision depth measurement associated with construction management of marine works, dredging, and land reclamation projects ■ Investigation of the shape of the foundation sections and seabed surveys in relation to the maintenance of facilities such as revetments, quay walls, and breakwaters ■ Investigation of sediment accumulation in dams, rivers, and lakes ■ Route surveys for submarine cables and submarine gas pipelines, as well as seabed surveys at landing points *For more details, please refer to the PDF document or feel free to contact us.
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Tosetsu Civil Engineering Consultant Co., Ltd. has been engaged in the maintenance and management of facilities for hydroelectric power generation, such as dams, and civil engineering structures for thermal and nuclear power generation, including intake and discharge channels, through investigations, surveys, measurements, analyses, and diagnostics. Additionally, we have developed systems that capture images of tunnel walls using vehicles equipped with digital cameras while driving through tunnels, as well as systems that efficiently inspect marine structures from ships while controlling the ship's motion.