Anhui province's first tunnel across the Yangtze River - wuhu south tunnel officially opened

At 9:15 am on September 17, anhui province's first Yangtze River tunnel, wuhu South tunnel, was officially opened, adding another channel to the Yangtze River.

"Wan jiang is the first tunnel," said the wuhu city is located in wuhu Yangtze river tunnel across the river bend, connection and jiangnan jiangbei new city proper, 5.96 km, 3.96 kilometers in the form of shield tunnel crossing the Yangtze, two-way six lanes tunnel design for double hole, using two excavation diameter 15.07 meters large diameter slurry balance shield construction.

Tailored for "Wanjiang No.1 tunnel", "Wanjiang Endeavor" large-diameter mud-water balance shield machine has a total length of 136 meters, a total weight of 4400 tons, and a total power of about 10014 kW. The single excavation section is more than 5 stories high. It is the most advanced and intelligent large-scale tunneling heavy machine in China.

It is understood that wuhu Chengnan River tunnel is the shield tunnel with the largest diameter in Anhui Province, and also the shield tunnel with the most complicated geological conditions, the most difficult construction and the highest risk on the Yangtze River. The winner of the nation's highest science and technology prize, money seven tiger academician of Chinese Academy of Engineering, points out that wuhu city river tunnel is the domestic and the world's most complex and difficult engineering, construction, shield machine a long across the bedrock section of nearly 1800 meters, and long distance transformation through in four different formation, rock strength up to 113.4 million mpa, The maximum water and soil pressure is about 7.5bar. The cutter wear of shield machine is very serious, and the technical difficulty and tunneling risk are rare in the world. It is one of the most difficult tunnels to construct in the Yangtze River basin so far.