Located in Sichuan, the Ningqiao Tunnel runs 9.1 kilometers along the Qiaojia branch line with a maximum burial depth of 650 meters. These factors presented a complicated structural design and difficulties with drainage and ventilation, compounded by a highly seismic and ecologically sensitive environment. To overcome these challenges, Sichuan Road and Bridge sought an integrated lifecycle BIM technology solution.

They selected OpenRoads and MicroStation to generate a high-precision 3D model of the tunnel and developed a construction management platform based on the BIM technology and LumenRT. The applications helped refine design and reduce errors compared to traditional methods, saving 10 days during the design cycle and CNY 1.22 million. Through dynamic visualization and simulation, they optimized tunnel drainage design, improving drainage by 50% to save an estimated CNY 2.3 million in operation costs. Developing the digital construction management platform streamlined the construction process, shortening the schedule by 90 days.