Casual standard penetration tests on the mountain.
【Background and Necessity】 ● In mountainous areas, transporting drilling equipment and circulation water for foundation surveys of transmission towers, wind measurement towers, and landslide-prone slopes incurs significant costs and time (helicopter, monorail). 【Product Overview】 (Patent No. 6619235: November 2019) ● Survey - Standard penetration test (JIS A-1219) fully compliant - Standard penetration tests conducted every 50 cm - Continuous core sampling (using a sampler for standard penetration tests) - No drilling water required - Friction around the sampler eliminated by the reaming barrel ● Equipment Transport - Total weight of the machine is 300 kg (including rods (10 m), excluding casing, etc.) - Can be transported by a one-box car - Transported on mountain roads using a crawler (150 kg load capacity, maximum incline: 30 degrees) ● No need for temporary workspaces *Please also see the leaflet.
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basic information
Conventional Type Core Drill Equipped Type Transport Conditions Slope Gradient 30° or Less Slope Gradient 30° or Less Construction Conditions No Drilling Water Required Drilling Water Used Applicable N Value (Converted) 300 or Less 1500 or Less *Please refer to the technical documentation as well.
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Applications/Examples of results
- Geological surveys associated with the installation of new towers and the replacement of existing towers - Geological surveys of slopes for disaster prevention measures - Geological surveys for the use of renewable energy, such as onshore wind power plants - Geological surveys in narrow locations - Other geological surveys in mountainous areas
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Company information
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.