Pore-forming device in soil nailing construction

The utility model relates to a pore-forming device used in soil nailing construction, which comprises a motor, a drill bit, a drill rod and a support, and is characterized in that the drill bit is connected to the motor through the drill rod, the drill rod is driven by the motor to drive the drill bit to rotate, the drill rod and the motor are supported by a movable support, and a bracket holder is arranged below the movable support. The pore-forming device is driven by the motor, the drill bit rotatably drills into the soil to form pores; and as the size of the drill bit can be adjusted as required, the purpose of large-diameter pore-forming and deep soil pore-forming is achieved, the construction is convenient and rapid, the soil nailing construction speed is accelerated, and the diameter size of soil nails can be ensured.