Method for coal rock recognition

A method for coal rock recognition while drilling based on an elemental analyzer, the method comprising:

• installing a coal rock recognition information monitoring panel on a drilling well;
• connecting the coal rock recognition information monitoring panel to a drill pipe through a data cable;
• driving, by a motor, the drill pipe to drill and punch a hole;
• after drilling for a certain distance, controlling a drill bit to stop drilling and starting the elemental analyzer for coal rock recognition and detection;
• then starting the motor to drive the drill pipe to rotate by 180° to drive the elemental analyzer to rotate;
• afterwards, irradiating X-rays to a wall of a borehole using an X-ray tube thereby exciting carbon, silicon and unknown elements in coal rock to be detected to generate secondary X-ray reflection;
• collecting energy and wavelength of emitted secondary X-rays by a detector;
• transmitting the collected energy and wavelength to a processor;
• comparing corresponding elements one by one through corresponding energy and wavelength to determine elements with corresponding energy and wavelength;
• detecting again and transmitting data to the coal rock recognition information monitoring panel through the data cable;
• and
• displaying and recording drilling data on the panel in real time.