China will build High-speed submarine train The largest in the world and “Giant tunnel” Which will be called as “Bohai Strait”. The railway network, which will extend 123 kilometers, and whose name goes back to the Bohai Strait, will connect the provinces of Liaodong and Shandong, in the northwestern territory of the Asian country. The amazing underwater engineering work will take between ten and fifteen years to be carried out, and will allow crossing the Yellow Sea, which occupies an area of 417 thousand square kilometers, in just 40 minutes.
Once completed, its length will exceed the Japanese Seikan Tunnel and the English Channel Tunnel, the two largest corridors currently in operation.
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The structural design is based on three parallel corridors: two dedicated to high-speed railways and a central third dedicated to maintenance, technical systems and escape routes. The speed of trains designed to operate on this line must reach 250 kilometers per hour, so that the tunnel directly integrates with the high-speed railway networks in the north and east of the country. China.
The ambitious “Asian giant” project is in the feasibility and planning stage. It is estimated that its construction will cost approximately 26.8 billion euros.
Realization of structure“Bohai Strait” It will cross sections of high geological complexity and nearby areas with seismic faults, which are historically associated with large-scale events. Initial plans indicate that the tunnel will be built at least 30 meters below the sea floor, in mostly rock layers.
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This depth is intended to reduce the risk of direct damage caused by earthquakes and, at the same time, reduce the pressure exerted by the water column on the infrastructure.
What will the infrastructure of China’s giant Bohai Strait tunnel, which is 123 kilometers long, be like?
Infrastructure for Huge tunnel Chinese “Bohai Strait” It will include the placement of segmented liner rings and expansion joints capable of absorbing small displacements and continuously controlling deformations.
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In addition, it will consist of redundant drainage, pumping and water insulation systems, in addition to distributed sensors that will be installed along its entire length.
The planned system will have the function of detecting pressure changes, the presence of water and structural changes. Operational safety also requires high-capacity ventilation, strict smoke control in the event of a fire, and refuge points connected to the central service tunnel, allowing for gradual emergency evacuation.
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