An example of a vegetation revetment method that withstood increased water levels (heavy rain) immediately after construction.
Examples of coastal protection methods that respond to increasing heavy rainfall (linear precipitation zones, typhoons, rainy seasons, etc.)! Compatible with a flow velocity of 5 m/s, similar to connected blocks. Numerous examples of disaster recovery.
This is an example of river construction where water levels rose due to heavy rainfall from the rainy season front in Reiwa 6, immediately after completion of the work. Over two days, more than 269mm of rain fell, exceeding the flood warning level. Although the grit saver was submerged during this record-breaking rainfall, no damage such as peeling or suction was observed. Strengthening of levees and riverbanks, measures against backflow, and the use of retention basins and adjustment ponds are all effective. The grit saver is produced by intertwining the roots of wild grass with grit nets in production fields. It has flow resistance up to 5m/s even against temporary increases in water level before establishment. 【Cost Reduction and Shortened Construction Period】 Compared to conventional technology, costs are reduced by 43%! Construction time is shortened by 64% (concrete block laying + covering soil + turf laying). It is more economical compared to other methods with equivalent riverbank functions (such as interlocking blocks). Since both riverbank construction and greening work are completed in a single process of laying, the construction period can be shortened. 【Ease of Construction】 No special tools are required, making construction easy. The grit saver is lightweight, allowing for clean construction without exhaust emissions even in residential areas. Since cranes and other equipment are not needed for construction, it can be carried out in rivers where temporary yards cannot be secured.
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basic information
Width: 1.05m Length: 3.00m Net: Special geotextile Grass: Native grass Please provide the following four conditions for the stability calculation: - Planned cross-section (loading conditions) - Slope - Design flow velocity - Slope length We will propose a stability calculation report based on the mechanical design method for revetments and a method for laying at the top and toe of the embankment tailored to the site.
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Applications/Examples of results
River levee Riverbank protection Backwater flood control Retention basin Regulating pond
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Company information
Since our founding, we have taken on the mission of "creating a green country" and have contributed to national greening, land conservation, and the creation of a rich natural environment through our greening projects. Even in the 21st century, often referred to as the era of the environment, we strive to be an "environmental creation company" that applies the technologies we have cultivated in greening to the improvement of the environment for the Earth and its people, engaging in creativity (planning, research, and development). In 2024, we recognize biodiversity conservation, a pressing social issue, as a new mission we must undertake, with our participation in the 30by30 Alliance and the certification of our research fields as "natural coexistence sites." Moving forward, we will actively address various social issues, starting with biodiversity conservation, in pursuit of a sustainable society. We aim to be a lasting company that meets the needs of local communities, promoting the greening of parking lots to mitigate the heat island effect, as well as greening watersheds, riverbanks, coastlines, and parks to propose a lush living environment.
