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Why is the United States quietly removing dams while China is continuously building hydropower stations?

发布时间:2020-09-21 点击量:1098

Let's have a chat today. As a highly developed economy, the United States has removed more than 1,150 dams so far. At present, China has a large number of dams and is still building more continuously. So, should we remove our dams?

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China has a vast land area, and its geographical environment is very suitable for our living. Rivers of various sizes run through the country from east to west and from north to south. In order to better understand the basic information of domestic rivers, the investigation team carried out research and finally obtained accurate figures. At present, there are more than 45,000 rivers in China with a drainage area of more than 50 square kilometers, and the total length adds up to 1.5 million kilometers. As we all know, the fresh water in rivers is the foundation of our survival.

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However, rivers also show their two - sided nature, presenting a contradiction between saving and endangering people. This year, rainfall in the vast majority of areas has exceeded the standard, leading to floods in many places. Currently, the number of affected people has exceeded 10 million, and the economic losses are incalculable. According to relevant data, a total of 14 rivers have exceeded the flood standard. We all know that water resources are extremely precious at present. How to regulate the flow of rivers and make full use of water resources through flood control and flood discharge measures has also become a way of social development and new energy acquisition nowadays.

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The most effective way for flood control and flood discharge is to build dams. This can not only achieve the goal of controlling floods but also store a certain amount of water, creating favorable conditions for the South - to - North Water Diversion Project. As we all know, China is a country that has achieved universal access to electricity, and a major contributor to this is the more than 100,000 dams we have built. There are more than 77 dams with an overall height of over 200 meters. In the subsequent usage, we have also verified the economic benefits brought by these dams.

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Why have energy - saving dams always been controversial?
Throughout the history of dam construction, there have always been disputes. Since rivers are blocked in the middle, the first thing affected is the ecological environment. This not only brings a devastating disaster to the organisms in the river but also causes certain troubles to humans. Many people are forced to migrate, disrupting the living patterns of surrounding animals and plants. Due to the reduction in river flow, water evaporation also decreases accordingly, making the greenhouse effect more pronounced.

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Why is the United States starting to demolish dams?
The United States was once on a spree of building dams. As a major dam - building country, it is now gradually demolishing dams. Over a period of 100 years, they have demolished more than 1,150 dams in total. Looking back to the 1980s, the process of dam - demolition in the United States was gradually carried out at that time. The main reason is that many people accused the environment of being damaged, and ultimately, the blame was pointed at the dams. According to subsequent statistical data, most of the dams demolished in the United States are those that have fallen into disrepair and mostly have certain safety hazards. However, their efforts in building new dams have not weakened at all, forming a good cycle between demolition and construction.

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So the main reason for demolishing dams is due to safety hazards. The dams being demolished are mostly those with a long history. Previously, due to relatively backward relevant technologies in our country, the dams we built were mostly earth - rock dams, as well as some small dams lacking proper management. These projects currently pose significant safety risks and have low economic efficiency. For newly - built dams, or the air - shield dams of our company, there are dedicated personnel for management. In - depth research has also been carried out on environmental protection measures, which has alleviated the impact on the environment.

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