Low-clearance rock stratum drilling construction device and method thereof

The invention relates to a low-clearance rock stratum drilling construction device and a low-clearance rock stratum drilling construction method. The low-clearance rock stratum drilling construction device is characterized in that a slewing drilling machine is arranged in a rack, a material moving space is reserved between the top face of the slewing drilling machine and the rack, a crane and a first material taking device are arranged on the rack, the first material taking device is located in the material moving space, the crane drives the first material taking device, and the first material taking device is arranged on the rack. A first material taking device penetrates through the through hole and clamps and lifts the fractured rock core; the full casing pipe is driven by the slewing drilling machine and comprises a drill rod set formed by axially splicing a plurality of first drill rods and a second drill rod axially connected with the bottom of the drill rod set, and a splitting rod used for laterally j