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In June 2025, disaster prevention measures for historic sites and cultural properties were incorporated into the first mid-term plan for national resilience. The unit net method has been adopted in many situations where landscape considerations are important. Moving forward, we aim to contribute to the protection of cultural properties and the prevention of human damage as a method that can balance landscape considerations and slope preservation. 【Features】 - This method suppresses surface landslides (up to about 3-4 meters thick). - Rock bolts and unit nets are connected by pressure plates, and their interaction stabilizes the slope. - Its open shape allows for minimal tree cutting. - The lightweight components excel in narrow areas, enabling efficient construction and shortening the construction period. 【Reasons for Adoption in Major Historic Sites and Cultural Properties】 - Landscape considerations are required near historical cultural properties. - The construction sites and access routes are narrow, making it impossible to secure large construction yards for methods like shotcrete frame construction. (The unit net is lightweight and easy to transport, eliminating the need for large construction yards.) - Cost reduction and shorter construction periods are possible compared to conventional methods, such as frame construction with rock bolts.

【Overview】 - It suppresses the erosion and runoff of surface soil on slopes using a polyester net and vegetation mat. 【Features】 - The specification materials are lightweight, making it possible to transport and deliver to relatively difficult sites such as narrow places and hillside works. - The use of a flexible net allows for close installation on uneven slopes. - By using a vegetation mat in conjunction, greening can be achieved.

The "DK Drain Pipe" is a new type of driven drainage pipe made of stainless steel, designed to be driven into the ground with threaded ends (male and female threads) to drain water from the ground, lower the groundwater level, and prevent slope collapse. 【Features】 ■ Improved durability and cost-effectiveness - By using stainless steel for the pipe material, it is resistant to rust, which can reduce lifecycle costs. ■ Improved workability - The pipe can be driven directly without prior drilling. - By striking the tip bit attached to the end of the pipe, the impact force is directly transmitted, making it easier to drive in. - The threaded ends of the pipe allow for easy connection between pipes. ● Please download the catalog for the construction procedure.

The high-durability STK net is a rust-free polyester hexagonal net that serves as an alternative to metal wire. Originally developed as a net for marine aquaculture, it has been repurposed for land applications and is used for various purposes such as rockfall prevention, sediment control, wildlife damage prevention, and fall prevention. It is ideal for areas along the coast where salt damage is a concern, volcanic regions with acidic gas emissions, and cultural properties or scenic areas where aesthetics are important. It contributes to improved weight and workability, being about one-fifth the weight of traditional metal wire.

【Usage Scenarios】 - Rockfall measures and slope protection in areas prone to rust, such as coastal regions, volcanic areas, and hot spring areas. - Repair over rusted wire mesh (STK net is made of polyester, so it does not acquire rust.) 【Benefits of Implementation】 - Reduction in life cycle costs. - Improved work efficiency due to lightweight design. - Can be installed over rusted wire mesh, eliminating the costs and labor associated with removing existing wire mesh.

In June 2025, disaster prevention measures for historic sites and cultural properties were incorporated into the first mid-term plan for national resilience. The unit net method has been adopted in many slope disaster prevention scenarios that consider landscape. Moving forward, we aim to contribute to the protection of cultural properties and the prevention of human damage as a method that can balance landscape consideration and slope preservation. 【Features】 - This method suppresses surface landslides (up to about 3-4 meters thick). - Rock bolts and unit nets are connected by pressure plates, stabilizing the slope through their interaction. - Its open shape allows for minimal tree cutting. - The lightweight components excel in construction in narrow areas, enabling a reduction in construction time. 【Reasons for Adoption in Major Historic Sites and Cultural Properties】 - Landscape consideration is required near historical cultural properties. - The construction site and access routes are narrow, making it impossible to secure large construction yards for methods like shotcrete. (Unit nets are lightweight and easy to transport, eliminating the need for large construction yards.) - Cost reduction and shortened construction time are possible compared to conventional methods, such as frame + rock bolt construction.