Xin Hua Wang·2026-01-20 11:43Core Viewpoint - The successful breakthrough of the Pingluo Tunnel, a key control project of the Tianlong Railway, marks significant progress in its construction, laying a solid foundation for the tunnel's full completion [1] Group 1: Project Overview - The Pingluo Tunnel has a total length of 15,032 meters and traverses the complex terrain of the Western Qinling Mountains, with a relative height difference of 100 to 300 meters and a maximum burial depth of approximately 650 meters [1] - The Tianlong Railway connects Tianshui City and Longnan City in Gansu Province, serving as a rapid railway line that accommodates both passenger and freight transport [1] Group 2: Construction Challenges and Techniques - The geological conditions of the tunnel are complex, presenting significant construction challenges [1] - The project team implemented a rigorous quality and safety control system, utilizing advanced technologies such as geological radar scanning and advanced geological drilling to ensure safe excavation and controllable processes [1] Group 3: Strategic Importance - Upon completion, the Tianlong Railway will connect with the Lanzhou–Lianyungang Railway and the Lanzhou–Chongqing Railway, becoming a crucial part of the southern passage in Gansu and enhancing the capacity of the new western land-sea corridor [1]