PURPOSE: A jumbo drill having a tunnel-shaped space is provided to improve working efficiency by allowing vehicles and the personnel access to a space in an apparatus without moving equipment. CONSTITUTION: The jumbo drill having a tunnel-shaped space comprises a tunnel-shaped support body(1) provided with a space(5) for making vehicles and the personnel come in and out, a pair of domed auxiliary supports(6) attached to the front and rear of the tunnel-shaped support body(1), a pair of domed support bodies(8) connected to the auxiliary supports(6) by many connectors(7) and provided with a grooved rack gear(10), a bracket provided with a pinion gear engaged with the grooved rack gear(10) to be movable rightward and leftward, and a jumbo drill body connected to the top of the bracket by a reciprocating cylinder.
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