The "frozen soil retaining wall" of Japan's Fukushima Daiichi Nuclear Power Plant may have partially melted

　　China News Service, November 26. According to a report by the Japan Broadcasting Association (NHK) on the 26th, part of the "frozen soil retaining wall" built to control nuclear sewage around the Fukushima Daiichi Nuclear Power Plant in Japan may be melting.

Tokyo Electric Power Company said this may be caused by groundwater gushing nearby.

The "frozen soil retaining wall" of the Fukushima Daiichi Nuclear Power Plant may have partially melted.

Image source: Screenshot of NHK report.

　　According to reports, the "frozen soil retaining wall" was constructed by the Fukushima Daiichi Nuclear Power Plant in Japan to control nuclear sewage.

The construction method is to bury freezing pipes around the nuclear power plant, then inject freezing materials, and use a freezer to cool it down to minus 30 degrees Celsius, thereby freezing the surrounding stratum and forming a frozen soil barrier to prevent further nuclear sewage due to the influx of groundwater. Increase.

　　In response to the melting of some areas of the "frozen soil retaining wall", Tepco stated that it will install steel pipes and steel plates that can prevent groundwater from flowing into the "frozen soil retaining wall" as early as early December, and will study follow-up measures on this basis.

Data map: Fukushima Daiichi Nuclear Power Plant in Japan.

　　TEPCO also stated that “the water level inside the'frozen soil retaining wall' near the building where the nuclear power plant is located has not changed, and the'frozen soil retaining wall' can still maintain its overall function.”

　　The report pointed out that Japan’s Tokyo Electric Power Company had installed a thermometer at the "frozen soil retaining wall" to measure the underground temperature. Since mid-September, some areas on the side of the mountainside of Unit 4 of the nuclear power plant have experienced abnormal temperature rise.

On November 18, the temperature rose to 13.4 degrees Celsius.

　　Earlier, Japanese media such as "Tokyo Shimbun" had also reported accidents such as the rupture of the frozen pipe of the "frozen soil retaining wall" and the leakage of coolant.