Why is Qingdao not afraid of floods?

In the face of fierce natural disasters, human beings have always been small, but people have never given up their research and response to natural disasters. Natural disasters are daunting, and we may not be able to cross the past together. At the same time, I also hope that there will be fewer natural disasters, so that people can continue to live and work in peace and contentment and enjoy life happily. Every year, we will inevitably see some cities flooded, causing huge losses.

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However, in China, there is a city that is least afraid of floods. It has not been flooded since the founding of the People's Republic of China, and there are few floods. Is the real reason related to Germany? Let's take a look at it next.

This city is Qingdao, Shandong Province, China. Qingdao is a famous coastal city in China, located in Shandong Peninsula. It is not difficult to find from the map that Qingdao is very close to Japan and South Korea. Therefore, Qingdao is still making efforts to build the China-Japan-Korea Free Trade Zone, and plans to build a brand-new cross-international trade zone, which is an important growth point of Qingdao's economy in the future. Qingdao is also a famous historical and cultural city with a long history and culture. It is the birthplace of Taoism in China, and it was successfully selected as a new first-tier city in China this year.

Why is Qingdao not afraid of floods? It is also related to the characteristics of urban construction. Every year in the rainy season in China, there are always some cities suffering from floods due to excessive rainfall, and many urban roads are flooded. Qingdao is rarely troubled by this problem, mainly due to Qingdao's complete drainage system and the construction method of sponge city. The reason is that many people attribute the credit to the underground drainage system built in Germany that year. This statement is obviously one-sided.

First of all, the main reason why Qingdao is not afraid of floods is its good geographical location. The overall topography of Qingdao is high in the west and low in the east. Besides, Qingdao is surrounded by the sea on three sides. The local area is not only mountainous, but also relatively high in altitude, and the geology is basically granite. So when the heavy rain comes, the rain will flow into the sea quickly and will not accumulate in the city for too long to form waterlogging.

Secondly, Qingdao's climate causes small annual rainfall and belongs to temperate monsoon climate. The climate is distinct all year round and the temperature is moderate. In addition, the annual rainfall is about 662mm, which is obviously not high compared with most southern cities in China.

Finally, thanks to Qingdao's good drainage system and the concept of sponge city construction, the Germans did build underground drainage pipes in Qingdao before, but only a small part of them, and after such a long time, the service life has long passed. Some pipelines have been eliminated in the further planning and construction of the city, and the pipelines still in use are less than 3 kilometers, which can't provide much help. Now the underground drainage system in Qingdao has been improved a lot, and the concept of sponge city and rain and sewage diversion can be used to implement high-standard construction.