The Aivyter AZT2-9700 Drill Jumbo has successfully demonstrated its performance and reliability in a tunnel construction project located in Putian, Fujian Province, China. Despite the complex geological conditions and narrow working spaces, the AZT2-9700 proved to be an efficient and stable solution for high-precision drilling in tunnel excavation.
Project Overview
The Putian Tunnel is part of a regional infrastructure expansion aimed at improving traffic capacity and logistics efficiency in southeastern China. The tunnel passes through hard rock layers with varying geological structures, high humidity, and limited ventilation. These factors made it essential to select drilling equipment with high penetration efficiency, precise control, and strong adaptability to narrow spaces.
Why the Aivyter AZT2-9700 Was Chosen
The AZT2-9700 model was selected after evaluating several alternatives due to its superior mobility, drilling precision, and energy efficiency. Key advantages include:
- Compact structure and strong maneuverability – ideal for small cross-section tunnels and underground roadways.
- High drilling accuracy – ensures consistent hole spacing, depth, and angle for optimal blasting results.
- Reliable hydraulic system – reduces failure rates and simplifies maintenance.
- Operator-friendly control interface – improves safety and reduces fatigue during long shifts.
- Energy-efficient design – helps lower operating costs and environmental impact.
On-Site Performance
During the Putian tunnel project, the AZT2-9700 Drill Jumbo was mainly used for face drilling and blasting preparation. The equipment was operated in confined spaces with uneven rock conditions, yet it maintained consistent performance and high drilling accuracy.
Compared to conventional drilling rigs, the AZT2-9700 shortened the average drilling cycle by approximately 10–15%. The machine’s adjustable boom system enabled flexible positioning, which allowed operators to reach all points of the tunnel face efficiently. The stability of the hydraulic system ensured smooth operation even under long working hours and heavy loads.
Project Outcomes
- Improved efficiency: Faster drilling cycles and reduced downtime during repositioning.
- Higher accuracy: Uniform hole depth and spacing ensured optimal blasting and smooth tunnel surfaces.
- Reduced maintenance: Durable components and stable hydraulic performance minimized maintenance frequency.
- Enhanced safety: Operators were able to control drilling from a safe distance, reducing exposure to hazards.
Lessons Learned and Recommendations
From this project, several valuable lessons were gained for future tunnel construction applications:
- Plan equipment positioning early to ensure enough space for boom movement and maintenance.
- Adjust drilling parameters (bit type, impact frequency, feed pressure) according to rock hardness for better results.
- Provide professional training for operators to maximize the machine’s performance and safety features.
- Maintain detailed operation logs to optimize maintenance schedules and cost control.
Conclusion
The Aivyter AZT2-9700 Drill Jumbo has once again proven its efficiency, stability, and precision in tunnel excavation operations. Its excellent performance in the Putian tunnel project highlights its suitability for complex underground environments. As infrastructure development continues across Asia and beyond, the AZT2-9700 remains a reliable choice for contractors seeking high productivity and operational safety.
Learn more about Aivyter drilling solutions at www.aivyter.com.
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