The water intake facility "Meiji Suigencho" in Suigen-cho, Toyota City, Aichi Prefecture, where a large-scale leak has occurred.
There is no prospect of recovery so far, and Aichi Prefecture says that water supply is expected to stop as soon as the water stored in the waterworks is exhausted.
It summarizes the structure of the facility, the status of water leaks, and the impact.
What is "Meiji Weir Weir"?
"Meiji Water Head Works" is a prefecture's industrial water intake facility that draws water from the Yahagi River in Suigen-cho, Toyota City, Aichi Prefecture.
It is a floodgate that regulates the water level, and by closing it, it blocks the flow of the river and raises the water level, and plays the role of pouring water into the intake in front of the floodgate.
Why is there a leak?
According to Aichi Prefecture, a hole was opened in the riverbed under the floodgate before dawn on the 17th, and a large amount of water was flowing downstream so as to pass under the floodgate.
We have taken measures such as installing a temporary pump, but at around 4:45 am on the 18th, we were able to take water at all.
For this reason, even if the floodgate is closed, the water level does not rise and it is not possible to draw water at the intake.
What is the impact of industrial and agricultural water?
According to Aichi Prefecture, there is no prospect of recovery so far, and it is expected that water supply to business establishments will stop when the water stored in the waterworks located downstream runs out.
Aichi Prefecture has requested the Tokai Regional Agricultural Administration Bureau, which manages the intake, to install a temporary pump that can secure a sufficient amount of water intake, and hastened to grasp whether it will affect the business establishments that use water services. I am.
This water supply supplies industrial water to 131 business establishments in 12 local governments in the Nishi-Mikawa region such as Toyota City, Kariya City, and Anjo City in central Aichi Prefecture, and most of them are business establishments of large automobile-related companies. about it.
In addition, the eight cities in the Nishi-Mikawa area are also taking in agricultural water for about 4,500 hectares of agricultural land, and according to Aichi Prefecture, the supply has already stopped completely due to this leak.
Rice cultivation is flourishing in this area, and the supply of water before rice planting stopped when it was needed, so prefectures and other prefectures are taking measures.
Thermal power plants that stop operation
Osaka Gas's "Nagoya Power Station" and "Nagoya Daini Power Station" in Taketoyo-cho, Aichi Prefecture cannot supply water, so they are scheduled to stop operation on the afternoon of the 18th.
Both power plants are thermal power plants that use coal and biomass as fuel, and supply electricity to the jurisdiction of Chubu Electric Power.
According to the Ministry of Economy, Trade and Industry, the two power plants do not have a large output and the demand for electricity is not high, so there is no impact on the supply and demand of electricity.
In addition, water supply has stopped at the "Hekinan Thermal Power Station" in Hekinan City, Aichi Prefecture, which is operated by the thermal power generation company JERA.
However, by using the water in the tank stored at the power plant, it can be operated for about 5 days, so it has no effect on power generation so far.