Keywords: Tunnel core drilling rig, modular design, underground relocation, narrow space operation.
Equipment relocation in tunnels often accounts for 30% of the construction cycle. The new generation of tunnel drilling rigs utilizes a hydraulic quick-connect + modular unit design, allowing the main unit, pump station, and control panel to be broken down into units ≤0.8 m³, which can be manually transported in a 2m × 2m tunnel. After implementation in a lead-zinc mine, the equipment transfer time in the tunnel was reduced from 8 hours to 2.5 hours.
However, how is the sealing reliability of the modular connections ensured under high-pressure mud conditions?
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