In 2017, Chinese Academy of Engineering completed a detailed design for an 84 mile long Tunnel to Taiwan. The Academy is the largest central governmental advisory body on infrastructural construction.
Beijing included a cross-strait high-speed rail network in its then-new five-year plan. But a lot of work has been need to get a viable technical design.
There is also the political challenge. Taiwan does not want the tunnel and a majority do not want reunification with China.
The China-Taiwan tunnel would start from Pingtan, a pilot free-trade zone area set up by Beijing in Fujian province in 2013 to boost trade with Taiwan. Digging would go down nearly 200 meters (218 yards). It would cut through complex layers of rock, including extremely hard granite and avoid at least two major earthquake faults and return to the surface in Hsinchu, a coastal city near Taipei.
It would be 135 kilometers long. This is three and a half times longer than the 37.9 km Channel Tunnel between Britain and France.
The Channel Tunnel – nicknamed the “Chunnel” – took six years to build and cost the equivalent of 12 billion euros (US$13.99 billion) today.
The Taiwan-China tunnels would have three main tunnels and each would be nearly a third larger than their European counterparts. Two main tunnels would each be 10 meters in diameter.
Two main passages would be used by trains running in opposite directions. There would be a smaller service tunnel that would contain power lines, communication cables and emergency exits.
Two artificial islands would have to be created in the middle of the Taiwan Strait for air treatment stations that would pipe fresh air into the tunnel.
China will spend almost US$2 billion (12 billion yuan) on a 6.8 mile (11 kilometer) long highway tunnel.
The Pingtan-Fuqing passageway, running more than 11 kilometers under the seabed, would beat the Tokyo Bay Aqua Line as the world’s longest undersea road tunnel. The Chinese road tunnel will be wide enough for three heavy cargo trucks to drive side by side in each direction.
There is a 26 million yuan feasibility assessment for building a road tunnel from Pingtan to Fuqing.
The Pingtan-Fuqing road tunnel would be a warm-up exercise for the construction of the rail tunnel from Pingtan to Hsinchu, Taiwan.
The 5-year plan talks about completing the Taiwan rail tunnel by 2030 but current engineers indicate that the digging and other work would take from 2020 to 2050. The start date assumes the election of a pro-Chinese government in Taiwan and the negotiation of an agreement to build the tunnel.
来源：三泰虎 http://www.santaihu.com/45775.html 译者：Joyceliu
Pretty sure they are going to have a hard time keeping the Taiwan side open......
China is prowess.
If china is planning on spending that much money to connect to Taiwan, that implies they are also planning on reclaiming Taiwan via military style.
Just one missile Taiwan will cause the tunnel collapse.
SEE YOU LATER ! TAIWAN ! WE MISS YOU !
Dual purpose tunnels can be so pragmatic!
And meanwhile here in the USA infrastructure hasn't changed in many areas since the 1970's.
Bravo, China. Bravo!!!
中国万岁，万岁，万万岁! ! !
Why not just design faster boats.
Is it for economical reason or for invasion?
China is building world record construction projects after projects.
Taiwan would blow up the tunnel and flood it.
Building a bridge to Taiwan?
china is trying to build invasion tunnels. Taiwan needs to find them and blow them up.
the diseases from mainland will come to Taiwan first.
I am against it. Taiwan is not worth the effort.
Let's call it what it really is: The Chinese Army Invasion Conduit
American hate to see them have peace.
Looks like China wants to invade by rail.
Just a bunch of "scientists" desperate for funding!
Yeah, a rail for invasion. Until TW gains freedom from harassment, they shouldn't even take part in this.
i'd hate to be stuck in there in an unlikely event of a war between china and taiwan. the tunnel will be one of the first structures to get blown up.
When China completes the tunnel work, Taiwan will redirect all its sewage to the tunnel.
Go China, the world is yours for the taking you deserve it.
Are they preparing to invading Taiwan by subterranean way which they call a "stealth" invasion.
Taiwan don't even want it and they would be fools to allow it!
How stupid, to build a tunnel to a place you are not invited.