Multifunctional drilling machine for tunnel

The invention discloses a multifunctional drilling machine for a tunnel. The multifunctional drilling machine comprises guide rails, wherein T-shaped sliding chutes are formed in the two guide rails; the T-shaped sliding chutes are connected with T-shaped sliding strips in a sliding manner; the upper ends of the T-shaped sliding strips are connected with a bottom plate; the upper end of the bottom plate is uniformly connected with three guide rods and is rotationally connected with a threaded rod; the upper ends of the guide rods are connected with reinforcing rods; the upper end of the threaded rod penetrates through and is rotationally connected with the reinforcing rods; the threaded rod penetrates through the reinforcing rods and is connected with a second motor; the second motor is detachably connected with the reinforcing rods; the guide rods are connected with sliding sleeves in a sliding manner; the threaded rod is connected with a threaded sleeve; the threaded sleeve and the sliding sleeves are connected with a base; the base is detachably connected with a hydraulic device; the hydraulic device is connected with a first fixing plate; one end, which is close to the hydraulic device, of the first fixing plate is connected with two telescopic rods; the telescopic rods are connected with telescopic sleeves in a sliding manner; and the telescopic sleeves are connected with the base. The height and the left-right direction of the multifunctional drilling machine can be adjusted within a certain range, so that the drilling efficiency is improved, and the cost is reduced.