Geotechnical investigation drill hole water level measuring instrument

The utility model relates to the technical field of water level measurement, and discloses a geotechnical investigation drilling water level measuring instrument which comprises a protection box, a moving assembly is arranged at the top of an inner cavity of the protection box, a concave frame is fixedly connected to the bottom of the moving assembly, a rotating motor is fixedly connected to the back face of the concave frame, and the output end of the rotating motor is fixedly connected with a rotating shaft. The front surface of the rotating shaft penetrates through the concave frame and is rotationally connected with the front surface of an inner cavity of the concave frame through a bearing, the outer surface of the rotating shaft is sleeved with a winding roller, and a measuring scale is wound on the outer surface of the winding roller. Through the arrangement of the heating box, the heating wire, the air blower, the exhaust pipe, the exhaust pipe and the air blowing cover, hot air can be blown to the me