Uncover the underground temple in Tokyo, with drainage of up to 10 million tons in three days
This year's No. 19 typhoon 'haibeisi' ravaged Japan, bringing a wide range of continuous rainfall, which has led to 52 breakdowns of 37 rivers. By using a drainage facility called the 'underground temple', the Japanese capital circle has effectively controlled the flooding of rivers within its jurisdiction.
According to Japan's Asahi Shimbun reported on the 14th, the full name of this' underground temple 'is' drainage channel outside the capital circle', which was completed in 2006. It has a total length of 6.3 kilometers and is located 50 meters underground.
Its working mechanism is that when the water level of nearby Zhongchuan, cangsongchuan, daluoguligan, waterway 18 and xingsongchuan rises, water is injected into the surge tank, and then discharged into Edo river with wide river channel through water pump.
According to Edogawa River Affairs Bureau, at 18:00 p.m. on the day of typhoon landing on the 12th, five rivers injected water into the 'underground temple' at the same time. At 19:10, the facilities began to drain water to Edogawa. But on the morning of the 13th, the water level in Edogawa also began to rise, which made the staff 'scared out of a cold sweat'. However, after that, the water level in Edogawa began to decline and the drainage work proceeded smoothly.
It is said that the 'underground temple' can store 670000 cubic meters of water at a time. From 12th to 14th, 10 million tons of water were drained. In 2015, Kanto & sdot; During the heavy rain in Northeast China, the system drained 19 million tons.
According to the daily news on the 13th, the 'underground temple' is also a famous tourist attraction in Tokyo. About 62000 people visited the facility in 2018. It is said that although the facility was closed on the 12th, it has been reopened since the 13th.