What are the longest expressway tunnels in Guangdong?

Yinpingshan Tunnel is located about 40 kilometers from Shenzhen to Boluo section of Boshen Expressway, with a total length of 6,940 meters, six lanes in both directions and a speed limit of100 km/h. The tunnel was undertaken by China Railway Tunnel Group Co., Ltd., and the project won the Luban Award of 2012/2013 China Construction Engineering. Yinpingshan Tunnel is the second longest tunnel in Guangdong section of Jiangxi-Shenzhen high-speed railway, with a total length of 98 13.37 meters.

The tunnel crossing area is mostly high stress area, which is prone to rockburst disaster. In order to ensure the construction safety, Xing Liwei, chief engineer of the Eighth Bid Section of the Jiangxi-Shenzhen High-speed Railway of the 19th Bureau of China Railway, said that the construction workers carried out technical research and adopted shaped charge hydraulic smooth blasting technology to reduce the disturbance to surrounding rock during blasting, improve the integrity and stability of the reserved rock mass, and greatly reduce the occurrence rate of rockburst.

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Yinpingshan Tunnel passes through Yinpingshan National Forest Park, which is known as one of the "most beautiful forests" in Guangdong, and its environmental protection requirements are extremely high. While ensuring the construction quality, the constructors optimize the construction scheme, reduce the area occupied by mountain excavation and forest land, strictly precipitate and purify the construction drainage, and fully protect the ecological environment of the first-class water source protection area.

The Jiangxi-Shenzhen high-speed railway runs from Ganzhou West Station in Ganzhou City, Jiangxi Province, passes through Heyuan City, Huizhou City and Dongguan City in Guangdong Province, and finally reaches Shenzhen North Station in Shenzhen, with a design speed of 350 kilometers per hour and a total length of 436.37 kilometers. It is an important section of China's eight vertical and eight horizontal high-speed railway network, and also the main channel connecting Jiangxi with the Pearl River Delta. The high-speed railway is expected to be completed and opened to traffic in 20021year.

Baidu Baike-Yinpingshan Tunnel