from the physics principle

, the Japanese government at all costs, in order to make frozen wall engineering become solve the nuclear problem of sewage "trump card". According to estimates, the construction cost of the project will be up to 32000000000 yen (about 2000000000 yuan). At the same time, after the completion of the project, only to maintain the utility of frozen wall and the required power is roughly equivalent to 13000 households in the sum of daily electricity consumption.

6 month 2 days, is considered an important measure to solve the first nuclear power plant in Fukushima sewage problem "frozen soil cover water wall" project officially started. According to the design plan of the Cheap NHL Beanies Japanese government and the Tokyo Electric Power Company announced, in order to prevent the inflow of groundwater sustainable plant caused by the increasing of high-level radioactive wastewater, in "3· around 1 to 4 nuclear power plant unit damaged 11" East Japan earthquake and tsunami disaster at Fukushima Daiichi nuclear power plant about 1.5 kilometers of the soil will be freeze, to form the so-called "frozen soil wall", thereby blocking water plant.

Since

since the first nuclear power plant in Fukushima in 2011 March as the worst nuclear accident in the history of mankind, in so far as long as three years, the Tokyo Electric Power Company has adopted the method of water to the reactor, melted nuclear fuel in nuclear accident for cooling. Mixing the resulting high radioactive nuclear waste and into the factory in the groundwater, which can not be discharged directly, and it is difficult to effectively deal with.

therefore, the Tokyo Electric Power Company to build about 900 aboveground storage tank, used for temporary storage of about 480000 tons of nuclear waste has been generated. However, with the Cheap NFL Long Sleeve T-Shirt passage of time, it has become increasingly difficult to continue a matter of expediency. On the one hand, the number of storage tank is not possible with the Everfount produce nuclear waste water and to increase without limit down; on the other hand, the existing water storage tank has also begun to appear aging, Cheap NBA Hats Water Leakage such a terrible phenomenon. Then, with the help of frozen soil wall to block the groundwater in this There was no parallel in history. engineering ideas are on the table.

from the physics principle, design thinking of this project is not complicated. According to the construction plan, around the plant 1 to 4 nuclear power plant about 1.5 km line staff will move along on the ground pre designated, at intervals, a distance of about 1 meters to the underground drilling. Then, about 1550 root freezing pipes are laid deep in the ground about 30 meters, and the pipe is connected above the conveying cooling material freezing cycle. Finally, the use of minus 30 degrees Celsius and calcium chloride solution as a cooling material, cooling pipe, and the surrounding soil completely frozen in a few months time, a frozen soil wall is similar to the "underground ice wall" is formed between the groundwater Cheap Womens NHL T-Shirt and the plant. In accordance Cheap NFL Fitted Hats with the design expectations, the project next year will be the end of 3. After the completion of frozen soil wall will make the current daily inflow of about 400 tons of water plant to reduce the 280 tons, thus greatly slow down the increasing speed of nuclear waste.

, however, from a practical perspective, frozen soil wall engineering can play the expected role, still need to draw a question mark. First of all, the frozen soil wall technology used in the excavation of tunnel, used to prevent the temporary construction accidents, such as collapse of permeable >