For the difference of rock and soil strength on the tunneling face, curved tunneling, and the top-heavy structure of the main machine forming the complex geological structure, the adoption of uniform ...

Chongtai Yangtze River Tunnel shield tunnelling site. Credit: China Railway Tunnel Group/Business Wire. China’s intelligent shield tunnelling technology has been successfully implemented in the ...

Linghang, better known as the world’s largest-diameter high-speed railway shield tunneling machine, crossed the 6.2-mile (10,000-meter) tunneling milestone on Tuesday, as reported by the China Media ...