The invention relates to the technical field of
tunnel construction, in particular to an intelligent rock drilling device suitable for a narrow tunnel space, which comprises a
drill arm, a first
signal induction block, a second
signal induction block, a
single chip microcomputer, a power supply and an alarm, and the first
signal induction block and the second
signal induction block are the same in internal structure and each comprise a sliding chute, a
magnet, a coil and an elastic piece. The
magnet is in sliding connection with the inner wall of the sliding groove, the
tail end of the elastic piece is fixed to the
tail of the sliding groove, the head end of the elastic piece is fixed to the
tail end of the
magnet, the coil is fixed to the sliding groove walls on the two sides of the head end of the magnet, the two ends of the coil are connected with pins of the input end of the single-
chip microcomputer, and the output end of the single-
chip microcomputer is connected with the alarm and the input end of the power source. Compared with the prior art, the function of continuously detecting and filtering interference signals during normal work is achieved at low cost, and the danger that constructors encounter
rockfall is avoided.