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The Jinping-II Dam hydroelectric power project involved excavating a number of large tunnels under the Jinping Mountains: four large 16.7 km (10.4 mi) headrace tunnels carrying water east, [8]: 30 two 17.5 km (10.9 mi) vehicular access tunnels, [9]: 1 and one water drainage tunnel.
There are four classes of road tunnels in China by length. [1]Super-long tunnel (>3,000m) Long tunnel (1,000m-3,000m) Middle-tunnel (250m-1,000m) Short tunnel (<250m) By 2012, there are 10,022 road tunnels and 8,052.7 km in total length in mainland China, including 441 super-long tunnels with 1,984.8 km in total length and 1,944 long tunnels with 3,304.4 km in total length.
About 30% of the power from the Jinping dams is used locally, and 70% will be sent to eastern China via ±800 kV bipolar HVDC transmission lines. [8] In addition to the four headrace tunnels, two roadway tunnels (A and B) were constructed with a diameter of 6 m (20 ft), and a drainage tunnel 7.2 m (24 ft) in diameter.
Rising nationalism under Modi has come alongside a similar phenomenon in China, where leader Xi Jinping has overseen an assertive foreign policy – though both sides have appeared to take steps ...
The tunnel diameter is 10.80 metres (35.4 ft). It is expected, over 17,000 vehicles will be able to use this tunnel daily. [1] The cost of the project is estimated at US$1.1B, of which around half is financed by the Exim Bank of China. [2] [3] The Karnaphuli Tunnel is the first underwater road tunnel in South Asia.
Pearl River Tunnel 珠江隧道 [12] China 36.043 km (22.4 mi) 2021 Guangzhou–Foshan circular intercity railway: Duomuge Tunnel 多木格隧道 [9] China (Tibet) 36 km (22.4 mi) 2030 Nyingchi–Ya'an railway Gaoligongshan Tunnel: China 34.5 km (21.5 mi) 2022 Dali-Ruili Railway: Chukyo Area Tunnel No.1 [11] Japan
Nanyanshan Tunnel China 7.833 km (4.867 mi) 2028 2 Yiwu-Longquan-Qingyuan Expressway Zhushanhu Tunnel China 7.810 km (4.853 mi) 2024 2 Jiangsu S341 Highway Dongshan Tunnel China 7.810 km (4.853 mi) 2024 2 Shanxi S66 Fenyang-Shilou Expressway Yangzong Tunnel China 7.770 km (4.8 mi) 2024 2
A report written by a Georgetown University team led by Phillip Karber conducted a three-year study mapping out China's complex tunnel system, which stretches 5,000 km (3,000 miles). The report determined that the size of the Chinese nuclear arsenal is understated and as many as 3,000 nuclear warheads may be stored in the tunnel network.