Client Background

The Chancay Port Tunnel is located approximately 80 kilometers north of Lima, Peru. It is a natural deep-water port. The tunnel project is 1.8 kilometers long and uses the mining method for construction. It serves as a key supporting infrastructure for the port development. Upon completion, the project will significantly improve Peru's port logistics infrastructure and promote regional trade as well as China-Latin America trade. It represents an important achievement in the joint implementation of the Belt and Road Initiative by China and Peru. Existing roads and buildings sit above the tunnel. The geology is variable, with changing rock densities, structures, and poor rock stability. These conditions posed significant safety risks and construction difficulties for the tunnel project.

Challenges Faced

Complex geological conditions: The tunnel geology is complex, with poor rock stability. The quality and timeliness of initial ground support are critical. Wet shotcrete support must follow closely after blasting to control surrounding rock deformation, placing strict demands on shotcrete equipment mobility and reliability.

Long-distance shipping and humid coastal environment: The equipment had to be shipped by sea to South America. The long shipping route and marine salt spray environment required high corrosion protection standards. The project is located in a tropical coastal area with high humidity, posing continuous challenges to the equipment's electrical and hydraulic systems' moisture resistance.

Integrated construction efficiency requirements: As part of the fully mechanized tunnel construction equipment set, the wet shotcrete jumbo needed to work alongside drilling jumbos, arch installation rigs, and self-propelled arch trestles to form a complete operational chain from excavation to ground support.

Beijun Solution

Shandong Beijun Group provided a customized wet shotcrete solution tailored to the complex geological and climatic conditions of the Chancay Port Tunnel project:

Primary Equipment: Beijun Intelligent Wet Shotcrete Jumbo (Mining Grade)
   This unit is specifically designed for shotcrete ground support in tunnels and underground projects. It is equipped with a high-power concrete pumping system and an intelligent electronic control system, with a theoretical spraying capacity of 20m³/h, meeting the rapid support requirements of tunnel construction. The machine integrates industry-leading boom design technology, allowing flexible operation in narrow tunnel cross-sections.

Key Technical Features:

Dual-power drive system: Equipped with an industry-leading diesel-electric dual-power operating mode. In outdoor areas without power supply or during power outages, the machine can still perform spraying using the diesel engine, ensuring uninterrupted all-weather construction.

Intelligent boom system: The multi-degree-of-freedom bionic boom design provides precise positioning and easy operation. It can easily follow tunnel contours for complete, dead-angle-free spraying coverage.

Corrosion protection and adaptive modifications: To address the long-distance shipping and Peru's humid coastal environment, the equipment was specifically treated with corrosion protection and electrical system waterproofing upgrades, ensuring long-term stable operation in overseas conditions.

Compliance and certification: The equipment holds China Mining Safety (KA) certification and meets safety standards for mining and tunnel projects in South America.

Integrated equipment coordination: The Beijun wet shotcrete jumbo operates alongside drilling jumbos, arch installation rigs, and self-propelled arch trestles as part of a fully mechanized mining-method tunnel construction equipment set, covering the entire sequence from excavation to completed support. This marks the first time a comprehensive Chinese tunnel mechanized construction solution has been deployed overseas as a complete package, demonstrating Beijun's integrated capabilities in international project support.

Localized service support: Leveraging Beijun's service network and parts supply in Latin America, experienced technical personnel were deployed to the site in coordination with the domestic team. Through on-site training and remote video guidance, local operators were quickly trained on equipment operation, ensuring project progress was not affected by equipment issues.

Implementation Results

Efficient support secured excavation progress: After the Beijun wet shotcrete machine was deployed at the Chancay Port Tunnel, it worked in close coordination with the full equipment set, achieving a streamlined operation of scaling — drilling — wet shotcrete support after blasting. Single-cycle support time was significantly reduced, effectively supporting tunnel excavation progress.

Reliable support quality in complex geology: The wet shotcrete process performed particularly well in tunnel sections with poor rock stability. Shotcrete strength was high, rebound was low, and application thickness was uniform, effectively controlling surrounding rock deformation and providing reliable safety assurance for tunnel construction.

Overseas environmental adaptability validated: After long-distance shipping and continuous operation in Peru's humid coastal environment, the equipment's corrosion protection and electrical waterproofing performed well. No equipment shutdowns were caused by environmental factors.

Integrated equipment coordination advantages: As part of the first fully mechanized Chinese tunnel construction solution deployed overseas, the Beijun wet shotcrete jumbo coordinated with the full equipment line, demonstrating the industry's advancement from single-product exports to comprehensive solution delivery.

Client Feedback

"The Beijun shotcrete jumbo performed reliably throughout the Chancay Port Tunnel project. In the broken rock sections, the rapid support capability gave us valuable working time. The equipment operated consistently in Peru's humid coastal climate, and the service team's technical support was timely. We are confident in continuing our cooperation on more projects in South America." — Equipment Management Team, Port Tunnel Project