Tunnel drilling device

The utility model discloses a tunnel drilling device, which relates to the field of tunnel construction and comprises a drilling machine used for drilling, the drilling machine is detachably mounted on a supporting seat, one end of the supporting seat is hinged to a connecting arm, and one end of the connecting arm far away from the supporting seat is provided with a limiting structure for limiting the connecting arm. The supporting seat is connected with a movable structure which drives the supporting seat to rotate, and the connecting arm is connected with the sliding beam in a sliding mode through a sliding structure. According to the device, the soil body around the constructed tunnel can be drilled, a grouting pipe can be conveniently installed, the soil body around the constructed tunnel can be reinforced, the drilling angle can be conveniently adjusted through the device, rapid drilling can be conveniently achieved, and therefore time and construction cost are saved. 本实用新型公开了一种隧道钻孔装置，涉及隧道施工领域，包括用于钻孔的钻机