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Dams built on rivers are a boon for controlling floods and providing water for irrigation and power generation, but the world's largest dam, the Three Gorges Dam built in China, has been surrounded by controversies.
It has been claimed that China's Three Gorges Dam has slowed down the Earth's rotation. It is a hydroelectric dam. It is built on the Yangtze River in China's Hubei province. It is the third longest river in the world with a length of over 6,000 km. This river often faces devastating floods. Its banks are destroyed every 10 years. Three lakh people were killed in the worst flood of the 20th century.
slowed down the earth's rotation
It is claimed that the Three Gorges Dam has affected the Earth's rotation. The Earth's rotation has slowed down. 2005 calculations by NASA scientists indicate that the Three Gorges Dam has slowed down the Earth's rotation. Actually, many factors are affecting the Earth's rotation. The dam lake contains 42 billion tons of water, due to the pressure of which the Earth loses its speed. Due to changes in water pressure and changes in the substances present in it, the time of a day increases by 0.06 microseconds. The day has become slightly longer due to the shutdown. Due to the shutdown, the North and South Poles have also shifted by 2-2 cm. While the Earth has become slightly flattened at other poles.
Excessive use of steel became cumbersome
This dam is made of steel and concrete. Its length is 2.3 km. It is 115 meters wide and 185 meters high. The cost of building the dam is more than two and a half lakh crore rupees. It took 20 years to build it. Its construction started in 1994 and was completed in 2012. Steel has been used extensively in building the dam. Since 4,63,000 tons of steel has been consumed, the stress on the steel structure has increased. 60 Eiffel Towers can be built with this much steel.