Fundamental Disaster-Prevention Measures for the National Land through Accountable Infrastructure

「At the site of a road collapse in Yashio City, Saitama Prefecture, press-in technology enabling vibration-free, noise-free and space-efficient construction was adopted to build a sewer bypass route and for other works, and the emergency response was completed. Nationwide sewer-pipe inspections following the accident identified approximately 300 km of pipelines as requiring action, making repairs and renewal urgent.」

「We received an order for bridge abutment reinforcement work at Noto Ohashi Bridge on the Noto Satoyama Kaido, where a collapse had forced alternating one-way traffic, as part of emergency restoration efforts. Using the Gyro Piler and the GRB System, we contributed to the early restoration of two-way traffic.」

「Construction progressed smoothly on coastal levee rehabilitation in Kochi Prefecture as a measure against a potential Nankai Trough megathrust earthquake, seawall rehabilitation in Tokyo as a measure against earthquakes and storm surges, seawall reinforcement in the Hijikawa River basin in Ehime Prefecture, which was affected by the July 2018 heavy rains in western Japan, and reinforcement of fishing-port seawalls in Hokkaido, among other projects.」

「A large-scale project to build a durable coastal levee using an Implant structure in Ofunato City, Iwate Prefecture, with a total length of 750 m, was completed in November 2022 after approximately 4 years and 1 month from the start of construction in October 2018.」

「On National Routes 219 in Kuma Village, Kumamoto Prefecture, and 210 in Hita City, Oita Prefecture, which collapsed after river flooding, group company 株式会社技研施工 built durable road retaining walls using Implant structures to prevent repeat disasters.」

「As part of efforts to move away from the principle of using earthen embankments, construction of an Implant Levee within the body of a river levee is progressing on the Kokubungawa earthquake and storm-surge countermeasure project in Kochi Prefecture. The plan is to monitor the behavior of the levee body, corrosion of the steel sheet piles and deformation over the long term in order to demonstrate the performance of the Implant Levee.」

「We proposed the durable Implant Lock levee developed by the company to relevant government ministries and agencies and local-government officials. The proposal was also discussed by the Council for Infrastructure Development of the Ministry of Land, Infrastructure, Transport and Tourism and taken up as an issue requiring consideration for the future.」

「Regarding the failure of river levees, a cause of the frequent large-scale flooding in recent years, we are strongly appealing to the public that the essential purpose of levees is to protect people's lives and property and that they must be “responsibility structures” that must never fail. We continue to propose Implant Rock Levees persistently to the relevant ministries and agencies and local-government officials, and are pursuing fundamental measures.」

「Regarding the failure of river levees, a cause of the frequent large-scale flooding in recent years, we are strongly appealing to the public that the essential purpose of levees is to protect people's lives and property and that they must be “responsibility structures” that must never fail. We continue to make proposals to and negotiate persistently with the relevant ministries and agencies, and are pursuing fundamental measures based on Implant structures, including Implant Rock Levees.」

「The Implant Method is a fundamental construction method for building 'responsible structures' capable of minimising flood damage and protecting people's lives.」