Located in the seismic belt, is it necessary to build a "smoky undersea tunnel" in 300 billion? Expert: it's worth it.

The development of cities in China is particularly rapid, up to now, it has developed economic structures such as urban agglomerations to jointly promote the development of cities. For example, China now has ten major economic zones, including Northeast Comprehensive Economic Zone, Northern Coastal Comprehensive Economic Zone, Eastern Coastal Economic Zone, Southeast Coastal Comprehensive Economic Zone, Upper and Middle reaches of the Yellow River, Upper and Middle reaches of the Yangtze River, Middle and Middle Pearl River Integrated Economic Zone, Inner Mongolia Comprehensive Economic Zone, Xinjiang Comprehensive Economic Zone and Qinghai-Tibet Plateau Integrated Economic Zone. It is the top narita to sapporo flights ten economic zones that connect Chinese cities one by one and become a collective and common development. But despite having so much economy, Districts, some cities are not strongly linked. In Bohai Bay, for example, there are two particularly awkward cities.
Shandong Yantai and Liaoning Dalian, more than 100 kilometers away, but it takes 18 hours by car
The two cities are Yantai in Shandong and Dalian in Liaoning. Shandong Yantai is located in the eastern coastal and northern coastal economic zone, while Dalian is also located in the northern coastal and northeast comprehensive economic zone, and the two cities are particularly close. The distance between the two cities is only over 100 kilometers. But because of a Bohai Bay, these two close cities are not strong sense of contact. For the vast number of Yantai people and Dalian people, if want to go to the opposite, there are only nrt to sapporo three traffic options. One is by plane, not counting the departure time, it takes about 50 minutes. Another is by boat, which takes seven hours to cross  Bohai Bay. The last kind of high-speed rail is even more difficult, and it takes about 18 hours to get around Bohai Bay. So the economic ties between the two cities are not strong.
The concept of "Yan Da Undersea Tunnel" has been proposed, with an estimated cost of 300 billion
Therefore, in view of this embarrassing situation, proposed the "Yan Da undersea tunnel" construction plan. Once completed, the undersea tunnel will take only 40 minutes to reach Dalian from Yantai, benefiting directly from the local residents. But the cost of the tunnel isn't expensive, with experts valuing the undersea tunnel at between 260 billion and 300 billion dollars. So the proposal has plenty of opponents.
Controversial, opponents put forward two points of "unsuitable construction" argument
What are the reasons for the opponents? The biggest problem is nature. It's not easy to build a subsea tunnel in bohai bay, and it's just in the tanlu seismic belt, a major seismic belt in the north-eastward megafracture system of the east asian mainland. The most recent earthquake, the 5.7 magnitude earthquake of boyuan city in jilin on may 28,18, was at 13 km, so many people worry that the risk factor is too high after the completion of the subsea tunnel, which has a great risk.
Second, it comes from the return on investment, and while the two cities are not weak in their economies, spending 300 billion on an undersea tunnel of the same size as the three gorges of the yangtze river and the beijing-Shanghai high-speed rail would be particularly beneficial. They are not as strong as the Yangtze River Delta or the Pearl River Delta. So many people are skeptical. Is it necessary to build the tunnel?
What is the necessity of construction? Experts put forward the advantages and necessity of "smoke tunnel"
However, in this case, experts have proposed several "necessity" to answer the question. In fact, everyone likes the "benefit prospects "of the two cities. If the two cities can be connected, the distance between the two places will be shortened by more than 1000 kilometers, while strengthening the links between the Shandong Peninsula and the Liaodong Peninsula. To help develop the economic circle around the Bohai Sea into an economic circle comparable to that of the Yangtze River Delta and the Pearl River Delta, to link up the eastern coastal and northeast regions, to support each other, to directly and indirectly promote the exchanges between 157 cities in the two regions, and to directly benefit from the trade channels between China and more than 160 countries to revitalize the northeast economy and strengthen the eastern economy  Has a very positive role.
The second word comes from two cities, which now have about 1m ferry vehicles, six million passenger trips and 90% from dalian and yantai. This means that the two places are actually economically linked, only limited by the traffic environment. Once the tunnel is built, the two places will change from "traffic terminal" to "transportation hub ", directly radiating the cities of both places.
Ultimately, the biggest problem is nature. Although located in the seismic belt, reference to Japan's current world's longest "Green letter tunnel" can be seen that science and technology can overcome nature, Japan's Green letter tunnel, such as the operation since the 1980s, experienced many earthquakes did not appear unexpected, so long as the technology is mature, smoke big sea tunnel can also be so.
The most important part of this undersea tunnel is to surround the Bohai Bay with its C-shaped transport, which is called "I-shaped" as a direct transportation route. I don't know how you rate this "super project "?