At the Yunwushan Tunnel construction site of the Yibin-Fuling High-Speed Railway, the orange-yellow body of the Sichuan Zhuanshen DH180 multi-functional drilling rig operates at a steady rhythm, standing out vividly under the lights. Within 180 minutes, it completes 100 meters of advance exploration drilling, transmitting real-time rock layer data that provides precise guidance for subsequent excavation. Just three years ago, such core equipment relied on imports, with high procurement costs and after-sales response times requiring 72 hours. Today, the deployment of the DH180 not only marks a breakthrough in domestic equipment technology but also demonstrates the efficiency and reliability of “Made in China” in the construction of the Yifu High-Speed Railway.
Technology Integration: Crafting the “All-Purpose Tool” for High-Speed Rail Tunneling
The Yichang-Fuling High-Speed Railway traverses karst terrain, presenting complex tunnel geology with alternating conditions of soft soil, fractured rock, and sinkholes. Over two years, the DH180 R&D team integrated foreign precision control with domestically produced high adaptability, forging a “multi-functional machine” capability. Its core power system employs imported-grade precision hydraulic control, featuring high-precision matching between hydraulic pumps and motors for stable output under heavy loads. The drill rod has been upgraded to high-strength alloy steel, achieving a 30% increase in torsional strength and 25% higher wear resistance than imported products, making it perfectly suited for the complex geological strata encountered in high-speed rail tunnels.
Construction Site in Action: Three Key Scenarios Safeguarding High-Speed Rail Construction
During tunnel construction for the Yichang-Fuling High-Speed Railway, advance borehole drilling, core sampling, and emergency rescue are critical phases where the DH180 delivered outstanding performance. In advance borehole operations, its high-definition imaging system clearly revealed the rock formation structure 30 meters underground. During one operation, the DH180 detected a water-filled cavern 15 meters ahead, allowing the construction team to promptly adjust their plan. This prevented a water surge incident, saving nearly one million yuan in emergency response costs while boosting advance drilling efficiency by 50% and achieving a forecast accuracy exceeding 92%.
Core sampling is vital for assessing rock mass stability. The DH180 achieves “low-vibration sampling” through optimized equipment. During limestone operations, it extracted cores up to 95 centimeters long with over 90% integrity, providing reliable data for support design and reducing tunnel support costs by 15%. For emergency rescue, the DH180 deploys rapidly. During a 2024 tunnel emergency drill, it completed rescue passageway drilling in just 4 hours. Capable of both transporting supplies and reinforcing surrounding rock, it has become an indispensable tool for establishing “lifelines.”
Cost-Effectiveness Advantage: The “Boosting Agent” for High-Speed Rail with Domestic Equipment
The DH180 is priced at just 60%-70% of comparable imported products. With domestically sourced wear parts, procurement costs drop by 50%, and delivery cycles shrink to 24 hours. A construction group's equipment manager crunched the numbers: deploying three DH180 units per project section could save 3 million yuan over five years. Sichuan Zhuanshen has established after-sales service centers nationwide, guaranteeing a 2-hour response time and 24-hour on-site arrival. This significantly reduces project delays compared to the 3-7 day service cycle typical for imported equipment.
Today, the DH180 has become the “mainstay equipment” for tunnel construction on the Yibin-Fuling High-Speed Railway. Its deployment not only elevates China's tunnel equipment localization rate to 75% but also propels high-speed rail construction with its efficient and reliable performance, embodying the “China Speed.” From overcoming technological barriers to achieving independent innovation, the DH180 demonstrates through action that domestically manufactured equipment is shining brightly in major projects like the Yibin-Fuling High-Speed Railway.
