Infection control measures at evacuation centers About 20% of the population can be accommodated Tama River basin June 3, 17:48
While there is concern about infection with the new coronavirus, how many residents can enter the evacuation center if there is a fear of flooding in the Tama River that flows through Tokyo and Kanagawa. A survey by NHK revealed that if measures were taken to prevent infection at evacuation centers, only 20% of the population in the flooded area could be accommodated.
In Typhoon No. 19 last October, there were a number of cases where the evacuation centers were full at local governments along the Tama River, so NHK is expected to be flooded when the Tama River floods. We surveyed 759 shelters in 23 municipalities.
25% of evacuation centers are in flooded areas
First, of the 759 shelters, about 25%, or 189, were within the inundation area.
Especially in Tokyo's Ota Ward and Kawasaki City, where a large area is flooded, there are evacuation centers that can reach a depth of 3 meters or more.
More than half can be put in an evacuation center
How long can residents in the inundation area enter the evacuation centers of each municipality?
NHK conducted a survey based on the data of 21 local governments that announced the number of people and the area of evacuation centers as of May. (Except Komae City and Inagi of unpublished ※)
As a result, out of the approximately 1.65 million people living in the inundation assumption area, can enter the shelter and about 880,000 people, "can accommodate rate" is about 53 It turns out that it stays in %.
If you take measures to prevent infections... The accommodation rate is 24%
In addition, to prevent infection with the new coronavirus, we calculated what would happen if evacuees were more than 2 meters apart.
If we calculate the area of one evacuee to be 4 square meters, the number of people that can be accepted has decreased to approximately 400,000, and the "accommodation rate" has reached approximately 24%.
Above all, in Ota Ward and Kawasaki City, which are flooded over a wide area, the space was overwhelmingly overwhelming, and the harsh occupancy rate was in the 10% range.
7% in Fuchu City, Tokyo
In Fuchu-shi, Tokyo, the evacuation shelter's accommodation rate for the population in the flooded area is 18%, which is 7% when considering infection countermeasures, the lowest among municipalities along the Tama River, and the evacuation of residents in the flooded area is an issue. I am.
A large-scale condominium along the Tama River in Fuchu City with 553 households could be flooded to a depth of nearly 3 meters in the worst case, so residents evacuated to the acquaintance's house living on a higher floor or the facility in the condominium. We are proceeding with efforts to
In October last year, Typhoon No. 19 raised the water level of the Tama River and announced an evacuation advisory, so more than 40 households living on the first floor of the condominium were evacuated. Since the rain had already intensified, some of the people who evacuated depended on an acquaintance who lived on the upper floors of the condominium. Also, a room called "Guest Room" on the 2nd floor of the condominium was opened, and more than 10 people evacuated.
According to Kenichi Hayashida, chairman of the self-governing body, in addition to annual disaster drills, the condominium is also undertaking initiatives to deepen exchanges between residents, such as holding festivals on a daily basis.
Mr. Hayashida said, "A condominium in an urban area is sometimes described as "I don't know who lives next door," but that doesn't allow us to deal with emergencies. Through events, we all work together to create a face-to-face relationship. I think it's the secret to responding to disasters."
Ota Ward, Tokyo 10% can be accommodated during infection control
Approximately 60% of the population of more than 700,000 in Tokyo's Ota Ward, about 440,000, live in the inundation area when the Tama River floods and causes the largest inundation.
In preparation for flood damage, Ota Ward has designated 89 places such as elementary and junior high schools as evacuation shelters. Of these, 59 places (over 60%) are in flooded areas, and there are limited space above the second floor of the building and space. It is being done. As a result, it is possible to accommodate only 110,000 people, compared to the 440,000 people who live in the inundated area.
Furthermore, if sufficient space is secured per person by taking measures to prevent infection with the new coronavirus, it will be about 46,000 people, and only 10% of the total can be accommodated.
In addition, in Ota Ward, the floor and range of action in the evacuation center are divided into those with ▽ symptoms of fever and cough, and those without ▽ symptoms, so the usable space may be more limited. Is that there is.
Ota Ward is also making efforts to increase the number of shelters by concluding agreements with metropolitan schools in the ward so that it can be used as a spare shelter, but there are limits.
For this reason, Ota Ward is calling on residents of the district not to be crowded in evacuation shelters, evacuation to homes such as safe relatives, and “home refuge” to stay on the higher floors of their homes.
“The residents need to secure their own safe evacuation destinations other than the evacuation shelters, and we would like to ask for their cooperation,” said Yasusei Kai, Ota Ward's manager in charge of disaster prevention planning.
Expert "Considering evacuation sites other than shelters"
Mr. Motoyuki Ushiyama, a professor at Shizuoka University who is familiar with evacuation in the event of a flood, points out that it is becoming increasingly important to re-evaluate how evacuation should take place amid concerns over new coronavirus infections at evacuation centers.
Regarding the results of this survey, Professor Ushiyama said that evacuation centers do not have sufficient capacity in metropolitan areas such as the Tokyo metropolitan area. “Going to an evacuation center is just one of the means, Not everyone has to go to a shelter."
Regarding evacuation destinations other than shelters, "If the expected depth of inundation is low, staying on the second floor or higher of your home is another way to evacuate. , You may move to a place other than your own home where you can ensure safety, or stay at an accommodation facility."
When thinking about where to evacuate, it is important to use hazard maps and other information to confirm what kind of disaster may occur around you.
Professor Ushiyama said, “If there is no other means than going to the shelter, going to the shelter will be one of the options. In an emergency, I can not make a calm decision, so I think about the place of refuge while the feeling is calm. You need to think carefully."
Number of evacuation centers in inundation areas by municipality
There were 189
shelters, which accounted for approximately 25% of the total inundation area of the Tama River .
▽ Tokyo Ota Ward 59 places
▽ Kawasaki City Kawasaki Ward 33 places
▽ Kawasaki City Nakahara Ward 29 places
▽ Kawasaki City Sachi Ward 19 places
▽ Kawasaki City Takatsu Ward 14 places
▽ Yokohama City Tsurumi Ward 12 places
▽ Kawasaki City Tama Ward 10 places
▽ Tokyo Komae City 8 places
▽ Tokyo Chofu City 3 places
▽ Tokyo Hino City 1 place
▽ Tokyo Akishima City 1
place There is a place that can flood more than 3 meters in the deepest place, but as an evacuation shelter Since there are limited facilities that can be used, we decide to use it after deciding conditions such as "2nd floor or above" and "3rd floor or above".
Acceptable rate by local government
When we calculated the number of people that the evacuation centers could accept based on the capacity and area of the evacuation centers, the ratio of "accommodation rate" was about 53% overall.
▽ Tokyo Fuchu City 18%
▽ Kawasaki City Nakahara Ward 23%
▽ Tokyo Ota Ward 25%
▽ Kawasaki City Sachi Ward 25%
▽ Kawasaki City Kawasaki Ward 25%
▽ Kawasaki City Tama Ward 29%
▽ Kawasaki City Takatsu Ward 35%
▽ Tokyo Chofu City 38%
▽ Tokyo Fussa City 40%
▽ Tokyo National City 47%
▽ Tokyo Akishima City 77%
▽ Tokyo Hino City 81%
▽ Yokohama City Tsurumi Ward 90%
Meanwhile, all of Tokyo's Setagaya Ward, Shinagawa Ward, Tachikawa Ward, Hachioji City, Tama City, Hamura City, Ome City, Akiruno City exceeded 100%.
Permissible rate of infection by local government
Considering measures against new coronavirus infection, when calculating the space per person at the evacuation shelter by 4 square meters indicated by the guidelines of some local governments, the "accommodation rate" further decreases, and it is about 24% as a whole. did.
It is conceivable that the family will spend time together in one lot, but since it depends on the situation, we did not include it in the calculation.
▽ Tokyo Fuchu-shi 7%
▽ Tokyo Ota-ku 10%
▽ Kawasaki-shi Nakahara-ku 12%
▽ Kawasaki-shi Kawasaki-ku 13%
▽ Kawasaki-shi Sachi-ku 13%
▽ Kawasaki-shi Tama-ku 15%
▽ Tokyo Chofu-shi 16%
▽ Tokyo Fussa-shi 17%
▽ Kawasaki City Takatsu Ward 18%
▽ Tokyo National City 19%
Also
▽ Tokyo Akishima City 32%
▽ Tokyo Hino City 34%
▽ Yokohama City Tsurumi Ward 45%
▽ Tokyo Tama City 45%
▽ Tokyo Tachikawa City 89%
▽ Tokyo Hamura City 94%
*This analysis excludes "Inagi City" where the number of people and the area of refuge is undisclosed, and "Komae City" where the capacity and area of the evacuation center are not announced for two-thirds. ..