Spring brings vitality, and with it, significant progress in various construction sites of the provincial key project, Zhen Guang Expressway. LANHI’s "Iron Armored Soldiers" are demonstrating their strength and pioneering spirit, driving major advancements in multiple tunnel projects and creating a dynamic and efficient construction blueprint.
1、Pingchang Tunnel
As a pilot project for fully mechanized equipment construction, the Pingchang Tunnel stretches 5,600 meters and is a long, low-gas tunnel. With a lengthy construction period, poor geological conditions, and high safety risks, LANHI has provided six intelligent pieces of equipment for this project. These include the LG312M intelligent arch installation vehicles and 40F wet spraying manipulators, fully implementing the concept of "mechanization reduces labor, automation replaces labor" by Shudao Group. This has effectively reduced construction safety risks and the number of workers in the tunnel face, significantly improving construction quality and efficiency.
At the beginning of this year, the Pingchang Tunnel, a key project in the C3 section of the Tongguang segment, successfully surpassed the 2,000-meter mark in its advancement.
2、Baiyi No. 2 Tunnel
The Baiyi No. 2 Tunnel project is a control project from Yuejia Town to Hanshui Town on the Zhen Guang Expressway. With significant construction difficulty, LANHI’s multifunctional tunneling machine was brought in for non-explosive mechanical excavation, wireless remote control operation, minimal surrounding rock disturbance, high intelligence, low dust, and the ability for two workers to complete the excavation. This has effectively reduced construction safety risks and the number of workers.
At the C6 section of the Baiyi No. 2 Tunnel construction site, workers are remotely operating LANHI's multifunctional tunneling machine, pushing forward with the tunneling work vigorously.
3、Guangna Tunnel
The Guangna Tunnel, with a length of 3,426 meters, consists mainly of siltstone and sandstone and has surrounding rock grades of IV and V. It is the only high-gas tunnel along the entire route, facing high risks such as high gas, shallow burial, landslides, water inrush, and crossing under a reservoir. LANHI’s LG312M intelligent arch installation vehicles were brought in to support mechanized operations, enhancing safety at the tunnel face, accelerating construction progress, and reducing labor costs, laying a solid foundation for early completion.
Currently, the Guangna Tunnel in the C1 section of the Tongguang segment has achieved a cumulative bi-directional advance of over 3,000 meters.
4、Ranjiaba Tunnel
The right line of the Ranjiaba Tunnel is 1,736 meters long, and the left line is 1,743 meters long, located in Tiexi Town, Tongjiang County. It is a low-gas tunnel with surrounding rock grades of IV and V. The entrance location is steep and has a large height difference. LANHI’s LG312M intelligent arch installation vehicles have been deployed to ensure smooth tunnel entrance construction.
In mid-April, the right entrance of the Ranjiaba Tunnel in the B2 project of the Chuanwang segment successfully entered, marking another acceleration in the construction of the B2 project.
To date, LANHI has continuously supported the construction of over 20 tunnels on the Zhen Guang Expressway, deploying more than 30 intelligent pieces of equipment, including multifunctional tunneling machines, intelligent arch/anchor installation vehicles, and wet spraying manipulators. Moving forward, LANHI will continue to support mechanized construction and lead with intelligent operations, further promoting the integration of innovative technologies and construction practices, aiding in the completion and operational efficiency of the entire Zhen Guang Expressway by 2026, thus empowering high-quality economic development.