Tunnel Core Drilling Rig

A tunnel core drilling rig is a specialized mechanical equipment designed for extracting cylindrical rock or soil samples from tunnel walls or surrounding geological formations during excavation or geological surveys. It features a high-precision rotary drilling mechanism equipped with diamond or carbide-tipped drill bits capable of penetrating hard rock layers. The rig is typically mounted on a stable, adjustable frame to ensure vertical/horizontal alignment and minimize vibration in confined tunnel environments.
Integrated hydraulic or electric power systems provide controlled drilling speed and torque, while core retention technology preserves sample integrity for structural analysis. Its compact design allows operation in limited spaces, with dust/water cooling systems to suppress airborne particles. Essential for assessing rock strength, fracture patterns, and groundwater conditions, it ensures safety and informs reinforcement strategies in tunnel engineering projects.