At the end of the New Year holiday, domestic tourists who travel to Hainan have to go back to work, but the cost has increased exponentially, because there is no cross-sea bridge between Guangdong and Hainan, and the outlying islands can only be taken by plane and ferry. However, in the face of the first New Year's holiday after the impact of the epidemic was almost gone, the enthusiasm of the masses to travel to Hainan was high. It is even said that a family of 5 will spend 100,000 yuan to fly back to Xinjiang from Sanya.
The talk of building a bridge over the Qiongzhou Strait between Guangdong and Hainan has been rumored for more than a decade. More than ten years ago, it was said that the construction of the cross-sea project in the Qiongzhou Strait will start in 2012 and be completed and opened to traffic in 2020. But now it's 2024, and the project has not yet been implemented.
Take out the map and look at it, the narrowest part of the Qiongzhou Strait, only 19 kilometers, less than half of the 55 kilometers of the Hong Kong-Zhuhai-Macao Bridge, why has it been only discussed but not actually implemented?
Because of poverty? Because of a lack of technology? Because of natural disasters?
So let's discuss today, what is the fundamental reason why Hainan has not built a sea-crossing bridge for so many years?
The depth of the strait is largeThe average depth of the seabed in the Qiongzhou Strait reaches 44 meters, and the deepest depth reaches 114 meters, which makes the construction of the bridge pier extremely difficult, and it is necessary to set aside a sea passage, the bridge deck must be raised by more than 40 meters, and the length of the bridge pier must be at least 100 meters or more, which is equivalent to the height of a 30-story building, which is currently unprecedented in China.
The geological conditions are complex: The Qiongzhou Strait is located on the geological fault zone, the seabed is undulating, the activity is frequent, and the average of several decades will occur in the offshore medium strength, which poses a great threat to the structural safety of the bridge. Some experts claim that Hainan Island was found to be rotating in a counterclockwise fashion and has been drifting southeastward. It is highly likely that the formation of Hainan Island is closely related to the evolution of the crustal movement of the Indian plate. Moreover, because of the movement of the earth's crust, the plates subsided and fractured, causing the crust to sink and form the Qiongzhou Strait. This is also related to the theory of plate motion, which has been discussed for a long time. And at present, the plate of Hainan Island is still drifting slowly, and it is still inconclusive whether it will float to ** in the future.
The climate is harsh: The Qiongzhou Strait is located in a typhoon-prone area, with strong winds, which has extremely high requirements for the bridge's wind resistance, and at the same time, if the bridge is built, it will be destroyed by natural forces such as huge tides, ocean currents and waves. This also increases the technical difficulty and cost of building bridges.
The economic cost is high: The construction of a sea-crossing bridge requires a huge investment and is very expensive to maintain. In addition, Hainan Island is relatively small, and the local tourism consumption is also limited, and a year may only be full of money during the Spring Festival holiday, and the cost of building the bridge in the early stage is too high, and I don't know how many years it will take to recover it in the later stage. It is better for Hainan to directly engage in the construction of a free trade port, and the economic benefits brought by the complete liberalization of customs closure in the future will be greater.
Environmental protection and human coordinationOne of the challenges in building the Qiongzhou Strait Bridge is environmental protection. The area around the Qiongzhou Strait is a coral reef national nature reserve, which is an extremely sensitive and important ecological environment. Therefore, considerable effort needs to be put into the human harmony between the bridge and nature.
Positioning of the political economyAlthough Hong Kong and Macao are small, they have been quite developed, and it can be said that they have developed to a bottleneck stage, and these two have special political status, and the construction of this Hong Kong-Zhuhai-Macao Bridge has a considerable practical and urgent need for the country's political and economic stability and ethnic integration.
In general, Hainan, which exploded due to the Spring Festival, has not yet completed the Qiongzhou Strait Bridge, and the problem of money is more important for technical reasons and economic benefits. Perhaps in another 10 or 20 years, modern technology has been able to overcome various problems in the Qiongzhou Strait, and the construction of bridges can indeed bring greater economic benefits, and then Hainan will be able to realize its long-standing wish to build a cross-sea bridge with Guangdong.
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