Typhoon No.19 Earth and sand disaster 3 people's death site is not designated as a warning area Gunma Tomioka November 12, 15:39
At the site of Tomioka City, Gunma Prefecture, where three residents were killed due to a landslide caused by Typhoon No. 19, landslide removal work was carried out on the 12th of a month after the disaster. Because the slope of this site was gentle, it was not designated as a landslide disaster warning area, and the city decided to make additional designations by reviewing the standards in the future.
On the evening of the 12th of last month, a landslide caused by Typhoon 19 occurred in Tomioka City's Takumi District, resulting in the deaths of three residents, including two residents.
In addition, according to the city, 11 months after the disaster, four households and 11 people around the site were forced to evacuate, and the site had been working to remove the collapsed earth and sand for 12 days.
A 70-year-old man who lived nearby said, “I think it's been another month. If I remember the landslide, I still can't get the field work done.”
The slope of the site was less than 30 degrees, and it was not designated as a landslide disaster warning area, and no evacuation advisory was issued at that time.
For this reason, the city will set up a committee with experts to review uniform standards and make additional designations for caution areas.
Professor Akihiko Wakai of Gunma University Graduate School, who specialized in sediment disasters and investigated the geology of the site, said, “Pumice erupted from the eruption of Mt. Asama more than 20,000 years ago becomes a clay layer that is difficult to pass water, making it a prone to landslide “Similar geological formations may exist around the active volcano, so it is necessary to investigate not only the slope but also the geology.”