In urban subway expansion projects, station extension blasting is a critical and high-risk operation. As a manufacturer specializing in rock drilling machinery, we introduce the YT28 air  leg rock drill—a professional-grade equipment designed for confined and precision-demanding environments. The YT28 combines a lightweight yet robust pneumatic design with a stable leg support system, allowing operators to perform accurate blast hole drilling in tight spaces. Its wet drilling mode effectively suppresses dust, reduces heat generation, and extends drill bit life, while the smooth impact mechanism ensures consistent percussion force, minimizing deviation during drilling. Clear positioning markings and adjustable leg angles further aid in achieving precise hole alignment, which is essential for avoiding damage to existing tunnel structures and ensuring controlled blasting outcomes.

Before adopting the YT28, many mining and tunneling sites relied on conventional rock drills or manual drilling methods, which often led to challenges such as hole deviation, excessive vibration, and dust pollution. These issues resulted in uneven blasting effects, potential safety hazards, and prolonged project timelines. After switching to the YT28, operators reported significant improvements: drilling accuracy increased by approximately 40%, with hole alignment errors reduced to within 3 cm in complex rock layers. The wet drilling system also improved working conditions by lowering airborne dust levels by over 80%, enhancing visibility and respiratory safety for crews. In a recent metro station expansion project in a densely built urban area, the YT28 enabled contractors to complete the enlargement blasting phase two weeks ahead of schedule, with zero incidents of adjacent tunnel wall damage. The equipment’s durability was evident as it maintained stable performance through continuous operation in humid, abrasive environments without significant wear.

For infrastructure developers and tunneling specialists, the YT28 represents more than just a drill—it is a precision tool that balances power, control, and operator safety. Its design reflects our factory’s decades of experience in developing rock excavation solutions for challenging underground applications. We provide full technical support, including on-site guidance for leg positioning, impact frequency adjustment, and maintenance of the water-sealed percussion system. Each unit is tested under simulated confined space conditions before delivery to ensure reliability. As cities worldwide expand their underground transit networks, the demand for accurate, efficient, and safe drilling equipment continues to grow. The YT28 leg rock drill meets this need by transforming complex blasting tasks into manageable, predictable operations—ultimately contributing to safer, faster, and more economical urban infrastructure development.

For detailed technical parameters or project case studies, contact our engineering team for tailored recommendations.