ZML160 Multi-Functional Drilling Rig: The “Safety All-Rounder” for Changgan High-Speed Rail Tunnel Construction
As a vital component of China's “Eight Vertical and Eight Horizontal” high-speed rail network, the Changgan High-Speed Railway traverses the mountainous regions of western Jiangxi and eastern Hunan. Over 40% of the route consists of tunnel construction, with multiple sections requiring passage through complex geological zones such as fractured, strongly weathered rock formations and water-rich faults—presenting immense construction challenges. Advance geological forecasting and exploratory drilling serve as critical “preemptive safeguards” for mitigating geological risks, directly determining project safety and schedule. ZSIM ZML160 Multi-Function Drilling Rig, leveraging its core strengths of “multi-functional capability and precision efficiency,” has emerged as the “safety all-rounder” for tunnel construction on the Changgan High-Speed Railway, ensuring safe passage through complex geological conditions.
A section of the Changgan High-Speed Railway tunnel complex traverses geologically complex areas like Wugong Mountain and Luoxiao Mountain, where variable geological conditions pose multiple risks including water and mud outbursts, as well as rock mass instability. In traditional tunnel construction, advance geological forecasting relies on specialized drilling equipment, requiring separate rigs for exploratory drilling. frequent equipment relocation and inefficient workflow coordination made it difficult to meet the demands of high-intensity construction. After introducing the ZML160, the project team successfully overcame this bottleneck, achieving efficient integration of advance geological forecasting and exploratory drilling operations.
During advance geological forecasting for the tunnel, the ZML160 demonstrated exceptional precision detection capabilities. Equipped with a specialized geological forecasting module and employing “low-speed steady drilling + real-time data feedback” technology, it accurately obtains core samples and geological information across varying strata depths. By analyzing this data, construction teams can preemptively identify the distribution, characteristics, and water-bearing conditions of adverse geological formations ahead, providing scientific basis for optimizing construction plans. During tunnel construction in this section, the ZML160 successfully identified a water-rich fractured zone 30 meters ahead through advance geological forecasting. The project team promptly adjusted support parameters and construction methods, preventing water ingress incidents and ensuring construction safety.
Tunnel borehole operations are critical for verifying geological forecast results and guiding on-site construction. The ZML160 excels in this domain as well. Equipped with a flexible, adjustable drilling system, it precisely controls drilling depth, angle, and diameter according to construction needs. Whether performing advance water detection holes, rock reinforcement holes, or pressure relief holes, it completes tasks efficiently. Its tracked chassis design enables agile maneuverability within confined tunnel spaces, allowing rapid hole positioning and significantly boosting exploration efficiency. Compared to traditional single-function exploration equipment, the ZML160 eliminates frequent tool and equipment changes, nearly doubling exploration efficiency and effectively reducing process transition times.
As a true “multi-tasker” in tunnel construction, the ZML160's versatility extends far beyond this. After completing advance geological forecasting and borehole operations, it can swiftly transition to pipe arch support mode, constructing a robust “protective barrier” for tunnel excavation. Its high-power hydraulic system combined with heavy-duty drill bits enables efficient pipe arch drilling in complex formations, ensuring hole accuracy and stability. This “one machine replaces three” operational model not only reduces equipment procurement and management costs but also significantly boosts construction efficiency, providing robust support for accelerating the Changgan High-Speed Railway tunnel project.
Since its deployment on the Changgan High-Speed Railway project, the ZML160 multi-functional drill rig has completed advance geological forecasting, exploratory drilling, and pipe arch support operations across multiple tunnel sections. Its stable and reliable performance has earned high recognition from both the project owners and construction teams. As tunnel construction continues to tackle increasingly complex geological challenges, the ZML160 is emerging as a vital equipment asset for the Changgan High-Speed Railway project. With its “safety-first, high-efficiency, all-around capability” characteristics, it is accelerating the completion of this major transportation artery connecting Jiangxi and Hunan provinces.
