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  6. High Energy Absorption Rockfall Protection Net "Robust Protection Net"

High Energy Absorption Rockfall Protection Net "Robust Protection Net"

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last updated:Dec 27, 2024

シビル安全心 関東営業所、中部営業所、近畿営業所、中四国営業所、福岡営業所
シビル安全心 関東営業所、中部営業所、近畿営業所、中四国営業所、福岡営業所
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A pocket-type rockfall protection net designed to pursue "clear safety" through certification and verification by a public third-party organization, featuring high energy absorption.

■Overview The robust protective net is a high-energy absorption pocket-type rockfall protection net designed to efficiently absorb the energy of falling rocks that occur at the top of slopes and safely guide them to the bottom of the slope. It is made from a combination of high-strength wire mesh, wire ropes, and cushioning devices. It has been developed based on the performance verification methods described in the Rockfall Countermeasure Handbook (December 2017) and has been proven to meet the three performance requirements (safety, usability, and reparability). ■Features 1. The cushioning device is delivered after factory assembly, reducing the installation process and time during construction. 2. Full-scale performance verification experiments have demonstrated that after partial repairs are made to a specimen that has been loaded once, reloading shows that performance is restored to 100%. 3. Performance evaluation sheets and experimental reports have been organized and can be provided upon request. ■Lineup and Types There are two structures: the 'Net Type' (7 types), which eliminates vertical ropes and combines high-strength wire mesh with horizontal ropes and cushioning devices, and the 'Rope Type' (1 type), which combines wire mesh and high-strength ropes in a vertical and horizontal lattice structure. *For more details, please refer to the PDF materials or feel free to contact us.*

    Other civil engineering works
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High Energy Absorption Rockfall Protection Net "Robust Protection Net"

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202210_ipros画像2.jpg
  • Related Link - https://www.rcnet.co.jp/experiment_video/

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basic information

■ Ministry of Land, Infrastructure, Transport and Tourism NETIS Registration Number: HR-230013-A ■ (Public Interest Incorporated Foundation) Civil Engineering Research Center: Construction Technology Review Certificate No. 2401 (There are various conditions for the applicable range) ■ Applicable Range ◇ Possible rockfall energy: 200kJ, 400kJ, 700kJ, 1,000kJ, 1,400kJ, 2,500kJ, 2,700kJ, 5,000kJ - The anchors installed on the concrete reaction bodies at both ends of the experimental device are firmly fixed to strong H-shaped steel, and there is no energy absorption due to deformation or displacement of the anchors and surrounding areas, making it a rigorous testing condition for the components (ropes, cushioning devices, etc.). - The indicated possible rockfall energies are values confirmed using an experimental device with concrete reaction bodies installed at both ends. - When applying this method at an actual site, the supports and anchors will be installed directly into the ground. - The design load of the anchors installed at the actual site will be determined based on the loads measured during the experiments. - The anchor length will be determined based on the results of pull-out tests and ground data, and the specified load-bearing capacity will be confirmed through verification tests after installation. For more details, please refer to the PDF document or feel free to contact us.

Price information

The construction cost per unit will vary depending on the scale of the project and various conditions (such as the type and length of rock anchors, special coatings, and landscape coloring, etc.).

Delivery Time

Please contact us for details

Applications/Examples of results

■Purpose: Rockfall Protection Facilities - Areas where there are sources of rockfall at the top of a long slope, with steep terrain extending down to the roadside. - Locations where the expected rockfall energy ranges from 150 kJ to 5,000 kJ. - Areas with topographical variations where a wider spacing of pocket-type supports is desired (10m to 19m). ■Track Record - Mainly consists of achievements in public works. https://www.rcnet.co.jp/example/list.php?cd=22 *For more details, please refer to the PDF materials or feel free to contact us.

Line up(8)

Model number overview
KB-NH3.2-1 Type Performance = up to 200kJ
KB-NH3.2-2 Type Performance = up to 400kJ
KB-NH-4.0-1 Type Performance = up to 700kJ
KB-NH4.0-2 Type Performance = up to 1,000kJ
KB-NH5.0-1 Type Performance = up to 1,400kJ
KB-NF5.0-1 Type Performance = up to 2,500kJ
KB-NF5.0-2 Type Performance = up to 5,000kJ
KB-RS5.0 Performance = up to 2,700kJ

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High Energy Absorption Rockfall Protection Net "Robust Protection Net"

High Energy Absorption Rockfall Protection Net "Robust Protection Net"

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シビル安全心

シビル安全心 関東営業所、中部営業所、近畿営業所、中四国営業所、福岡営業所

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Civil Safety Heart Co., Ltd. is committed to providing civil engineering products (methods) and high-value-added services that thoroughly pursue safety against threats from natural disasters such as falling rocks, landslides, and avalanches. We offer a variety of methods, including those for rockfall protection, rockfall prevention, and landslide countermeasures. Please feel free to contact us if you have any inquiries.

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