What is the cause of road collapse in a residential area?
Tunnel construction in the vicinity was temporarily canceled October 19, 5:02
On the afternoon of the 18th, in a residential area in Chofu City, Tokyo, a road was found to be depressed over a width of 5 meters, and NEXCO East Japan, which had been digging a tunnel underground in the vicinity, temporarily stopped the construction. , We will set up a meeting of experts to investigate the cause.
On the afternoon of the 18th, a report was received at 2-chome, Higashi Tsutsujigaoka, Chofu City that the road was depressed, and the Metropolitan Police Department investigated that there was a hole about 5 meters wide, 2 meters long, and 5 meters deep. I did.
Under the road near the site, NEXCO East Japan is digging a tunnel for the "Tokyo Gaikan Expressway", commonly known as the "Gaikan Expressway," and in the middle of last month, it was deeper than 40 meters underground at the point of depression. It means that the excavation work was done at the place.
NEXCO East says that the causal relationship between the construction and the depression is unknown, but just in case, the construction will be temporarily stopped and a meeting of experts from outside experts will be set up to investigate the cause.