Open house on construction of ground repair
Open house on the current situation of cave-ins and cave-ins
June 16th and 17th, 2023 Results

In 2020, the ground surface cave-in/cavity accident during construction of the Tokyo Outer Ring Road (Kanetsu-Tomei), as well as vibration and noise during tunnel construction, caused a great deal of inconvenience to residents. We sincerely apologize for the inconvenience caused.

At past open houses and forums for exchanging opinions, we have received feedback that we would like to confirm in advance the vibration and noise of the equipment that will be used on-site when it is in operation.
In response to such opinions, we held a tour of the ground repair work for those who live in the vicinity of the ground repair work site, so that they could check the situation such as vibration and noise in advance.
In addition, for those who live in the vicinity of the ground repair work site, we will explain the ground repair construction plan using panels individually. We established place of opinion exchange by city, company.

At the same time, for residents of Chofu City, there will be an open house where individual explanations will be given using panels on the current situation of cave-ins and voids and the overall plan for ground repair work to be carried out around the cave-ins. has been held.

Overview of the tour

Tour of ground repair work

Tour materials [PDF: 1.5MB]

Open house overview

Open house on construction of ground repair

Open house materials [PDF: 5.5MB]

Open house on the current state of depressions and cavities

Open house materials [PDF: 9.2MB]

Opinions received at briefing sessions and emails, etc., and summary of responses

Summary of opinions received during the open house and opinion exchange forum regarding ground repair work and responses thereto (as of January 24 2024) [PDF: 1.3MB]