I want to ask a question that everyone is very concerned about recently: Should the Three Gorges Hydropower Station be built? What are its disadvantages and advantages? Do the advantages outweigh the

I want to ask a question that everyone is very concerned about recently: Should the Three Gorges Hydropower Station be built? What are its disadvantages and advantages? Do the advantages outweigh the disadvantages? I think to evaluate a thing, we must first have a good understanding of it. It is suggested that the landlord pay attention to the relevant knowledge of water conservancy projects and judge for himself whether the advantages of water conservancy projects, including the Three Gorges, outweigh the disadvantages or the disadvantages outweigh the advantages.

Personally, the advantages of water conservancy projects outweigh the disadvantages.

The definition of water conservancy project is to control natural water flow in order to achieve the purpose of promoting benefits and eliminating pests.

So:

1. Benefits of the Three Gorges:

Clean energy power generation: reduce the pollution of conventional energy such as thermal power, which is beneficial to environmental protection;

Flood control: just look at the people in Jingjiang flood diversion area of Hubei Province. Netizens have misunderstandings about the release of water in the Three Gorges flood season and do not understand the operation principle of the Three Gorges Reservoir. The flood control of the Three Gorges is not to store every drop of water in the reservoir during the flood season. The reservoir is not that big. Therefore, under the condition that the downstream flood can be tolerated, the Three Gorges still needs to release some water in order to set aside some storage capacity to meet the greater flood. Because the current weather forecast cannot predict the future rainfall, if there is not enough storage capacity, if there is a big flood, it will be very unfavorable to the flood control of the whole Yangtze River basin. Therefore, the Three Gorges left the flood in the reservoir for a period of time, and after the flood situation in the lower reaches eased, it was necessary to immediately release water for flood discharge and deal with the floods behind.

Drought resistance: The drought this summer would have been more serious without the Three Gorges.

Shipping: The throughput is increased from 3,000 tons to10,000 tons, and the annual throughput is increased from 6,543.8+million tons to 50 million tons.

2. Disadvantages of the Three Gorges:

Destroy the ecological balance: mainly destroy the growing environment of fish, animals and plants. However, any human activity is actually at the cost of destroying nature, and even human's own breathing and food have a negative impact on nature. Why hasn't anyone stopped mining and digging for oil?

Immigration: It is difficult to leave the hot land, and the resettlement and sustainable development of immigrants are a great test. Resettlement is the biggest difficulty of the Three Gorges Project, and the resettlement funds account for 45% of the total investment of the project. After the Three Gorges Reservoir is completed, it will flood 129 towns, including two medium-sized cities such as Wanzhou and Fuling, and a dozen small cities. There will be1130,000 immigrants, which is unique in the history of world engineering, and if the water level at the reservoir tail exceeds the forecast, the number of new immigrants will increase. Resettlement is mainly solved by moving backward or nearby. However, it was later found that the reservoir flooded a large amount of cultivated land, resulting in a large population and a small population in the entire reservoir area, and the ecological environment tended to deteriorate. Therefore, the rural population has another immigration method, that is, the government arranges for their families to move to other provinces. At present, about 1.4 million migrants in the reservoir area have moved to Shanghai, Jiangsu, Zhejiang, Anhui, Fujian, Jiangxi, Shandong and Shandong.

3. The legendary shortcomings:

Destruction of geological structure: the maximum height of the Three Gorges Reservoir 1.75m, or even the whole reservoir area 1.75m, the bearing capacity of the foundation does not exceed 2MPa, and even the force of rock crushing cannot reach, let alone the destruction of geological structure, causing an earthquake. Small earthquakes caused by reservoirs are mainly caused by water infiltrating into cracks in rocks, which reduces the sliding resistance between rocks and breaks the original balance of the surface. But it has no effect on the deep geological structure. The tsunamis in Wenchuan, Haiti, Chile and Japan have nothing to do with the Three Gorges.

Cause climate change: China's climate is mainly affected by monsoon. At best, the Three Gorges is a dam with a height of 185m, which can't stop the monsoon.