Disaster prevention and mitigation and renewal technologies for existing structures
First written in FY2016. 20 of 28 entries say "Restated". Latest entry: FY2026.
12 other companies' latest entry also says "Advanced".
- FY2026AdvancedAnnual report
「Going forward, while continuing to enhance these technologies, we will develop the unmanned and automated construction system "Tunnel RemOS" and aim to make work at the tunnel face fully unmanned.」
At N-Field, automated construction systems for wheel loaders and backhoes were demonstrated, marking progress toward fully unmanned work at the tunnel face using Tunnel RemOS. - FY2025-H1RestatedAnnual report
「There were no material changes in the status of the Group’s R&D activities during the six-month consolidated accounting period.」
No significant changes were reported in research and development activities, including technologies for disaster prevention and mitigation and renovation technologies for existing structures. - FY2024AdvancedAnnual report
「We newly established and began operating the N-Field research and development site in Nasushiobara, Tochigi Prefecture, to further advance the development of mountain tunnel construction technologies, including unmanned and automated construction systems.」
The N-Field research and development site was established and began operating to test remote-controlled and automated construction for mountain tunnels and autonomous operation of hydraulic excavators. - FY2024-Q3RestatedAnnual report
「There were no material changes in the status of the Group’s research and development activities during the cumulative third quarter of the current consolidated fiscal year.」
No significant changes were reported in research and development activities, including technologies for disaster prevention and mitigation and renovation technologies for existing structures. - FY2024-Q2RestatedAnnual report
「There were no material changes in the status of the Group's research and development activities during the cumulative second quarter.」
No significant changes were reported in research and development activities, including technologies for disaster prevention and mitigation and renovation technologies for existing structures. - FY2024-Q1RestatedAnnual report
「There were no material changes in the status of the Group's research and development activities during the cumulative first quarter.」
No significant changes were reported in research and development activities, including technologies for disaster prevention and mitigation and renovation technologies for existing structures. - FY2023AdvancedAnnual report
「We verified that positioning can be performed using high-precision positioning information transmitted by "Michibiki" with accuracy within 10 cm, while maintaining a high level of stability, approximately 4 cm horizontally and approximately 9 cm vertically.」
The Quasi-Zenith Satellite System was demonstrated in dam construction, confirming its potential application to automated cable-crane operation. A remote operation system for hydraulic excavators inside tunnels was also developed, and field demonstrations of work at the tunnel face began. - FY2023-Q3RestatedAnnual report
「There were no material changes in the status of the Group’s research and development activities during the cumulative third quarter of the current consolidated fiscal year.」
No significant changes were reported in research and development activities, including technologies for disaster prevention and mitigation and renovation technologies for existing structures. - FY2023-Q2RestatedAnnual report
「There were no material changes in the status of the Group's research and development activities during the cumulative second quarter.」
No significant changes were reported in research and development activities, including technologies for disaster prevention and mitigation and renovation technologies for existing structures. - FY2023-Q1RestatedAnnual report
「There were no material changes in the status of the Group's research and development activities during the cumulative first quarter.」
No significant changes were reported in research and development activities, including technologies for disaster prevention and mitigation and renovation technologies for existing structures. - FY2022-Q2RestatedAnnual report
「There were no material changes in the status of the Group’s research and development activities during the cumulative second quarter of the current consolidated fiscal year.」
No significant changes were reported in research and development activities, including technologies for disaster prevention and mitigation and renovation technologies for existing structures. - FY2022-Q1RestatedAnnual report
「There were no material changes in the status of the Group’s research and development activities during the cumulative first quarter of the current consolidated fiscal year.」
No significant changes were reported in research and development activities, including technologies for disaster prevention and mitigation and renovation technologies for existing structures. - FY2021AdvancedAnnual report
「We jointly developed with Nagasaki University’s Institute for Marine Future Innovation the airship-type waterway tunnel inspection robot "Tunnel Manbow."」
A robot capable of unmanned inspection of waterway tunnels through autonomous flight was developed. The company described its application to the safe inspection and maintenance of tunnels at risk of collapse, including after an earthquake. - FY2021-Q3RestatedAnnual report
「There were no material changes in the status of the Group’s research and development activities during the cumulative third quarter of the current consolidated fiscal year.」
No significant changes were reported in research and development activities, including technologies for disaster prevention and mitigation and renovation technologies for existing structures. - FY2021-Q2RestatedAnnual report
「There were no material changes in the status of the Group’s research and development activities during the cumulative second quarter of the current consolidated fiscal year.」
No significant changes were reported in research and development activities, including technologies for disaster prevention and mitigation and renovation technologies for existing structures. - FY2021-Q1RestatedAnnual report
「There were no material changes in the status of the Group’s research and development activities during the cumulative first quarter of the current consolidated fiscal year.」
No significant changes were reported in research and development activities, including technologies for disaster prevention and mitigation and renovation technologies for existing structures. - FY2020AdvancedAnnual report
「Although this new LPWA communication system is a low-power wide-area wireless system, it enables faster and more stable communications than major LPWA systems and can collect high-precision vibration measurement data without loss. Because it is easy to install and can significantly reduce costs, it is attracting attention as a new means of disaster prevention and mitigation in the construction industry, which faces the challenges of aging structures and a shortage of inspection engineers.」
The effectiveness of an LPWA-based structural monitoring system was confirmed, and its application to the inspection of aging structures and disaster prevention and mitigation was newly described. - FY2020-Q1RestatedAnnual report
「There were no material changes in the status of the Group’s research and development activities during the cumulative first quarter of the current consolidated fiscal year.」
No significant changes were reported in research and development activities, including technologies for disaster prevention and mitigation and renovation technologies for existing structures. - FY2019AdvancedAnnual report
「We are jointly developing with TODA CORPORATION and GEOSTR Corporation precast lining concrete for mountain tunnels, which is expected to provide various benefits by eliminating work in confined spaces. The use of precast products improves durability and can suppress the occurrence of cracking and spalling. We conducted a large-scale simulation test at the Aikawa Technical Research Institute and confirmed the validity of the transportation and assembly methods devised. Transportation of precast lining concrete from both tunnel portals is possible without requiring skilled workers, and the construction speed can be increased by approximately 1.5 times, thereby improving productivity and shortening the construction period.」
Lining concrete for a mountain tunnel was converted to precast construction, and the transportation and assembly methods were verified through a large-scale simulation test. The reported benefits included approximately 1.5 times faster construction and no need for skilled workers. - FY2019-Q3RestatedAnnual report
「There were no material changes in the status of the Group’s research and development activities during the cumulative third quarter of the current consolidated fiscal year.」
No significant changes were reported in research and development activities, including technologies for disaster prevention and mitigation and renovation technologies for existing structures. - FY2019-Q2RestatedAnnual report
「There were no material changes in the status of the Group’s research and development activities during the cumulative second quarter of the current consolidated fiscal year.」
No significant changes were reported in research and development activities, including technologies for disaster prevention and mitigation and renovation technologies for existing structures. - FY2019-Q1RestatedAnnual report
「There were no material changes in the status of the Group’s research and development activities during the cumulative first quarter of the current consolidated fiscal year.」
No significant changes were reported in research and development activities, including technologies for disaster prevention and mitigation and renovation technologies for existing structures. - FY2018AdvancedAnnual report
「We jointly developed with タグチ工業株式会社 a high-speed muck removal system combining the previously developed mobile blast protection balloon, which prevents flyrock during blasting, with a sliding tailpiece trolley that transfers muck to a belt conveyor. The system advances the leading equipment of a continuous belt conveyor system in line with the progress of the tunnel face, enabling the time required to remove muck to be reduced by up to 30% or more.」
The company reported multiple joint development and demonstration results in research and development, including productivity improvement and disaster prevention and mitigation technologies. - FY2018-Q3RestatedAnnual report
「There were no material changes in the status of the Group’s research and development activities during the cumulative third quarter of the current consolidated fiscal year.」
No significant changes were reported in research and development activities, including technologies for disaster prevention and mitigation and renovation technologies for existing structures. - FY2018-Q2RestatedAnnual report
「There were no material changes in the status of the Group’s research and development activities during the cumulative second quarter of the current consolidated fiscal year.」
No significant changes were reported in research and development activities, including technologies for disaster prevention and mitigation and renovation technologies for existing structures. - FY2018-Q1RestatedAnnual report
「There were no material changes in the status of the Group’s research and development activities during the cumulative first quarter of the current consolidated fiscal year.」
No significant changes were reported in research and development activities, including technologies for disaster prevention and mitigation and renovation technologies for existing structures. - FY2017-Q3RestatedAnnual report
「There were no material changes in the status of the Group’s research and development activities during the cumulative third quarter of the current consolidated fiscal year.」
No significant changes were reported in research and development activities, including technologies for disaster prevention and mitigation and renovation technologies for existing structures. - FY2016First statedAnnual report
「We conduct research and development into technologies that contribute to disaster prevention and mitigation for buildings and social infrastructure, renovation technologies, technologies that improve productivity and quality, and various environmental technologies that contribute to energy conservation and a low-carbon society.」
The company states that the SNB construction method obtained construction technology review certification in December 2015 and that the Net Keeper construction method was adopted for repair work in February 2016.