THE DIVISION OF COAL SPECIES IN SEAMS BY THE DIGITAL LOGS IN JUYE COALFIELD

The division of coal species is based generally on the sampling and analysis.As to the coal seams with complex texture and higher degree of metamorphism,the qualitative division of coal species is more complex.Using the geophysical characters of coal seams reflected by the logging data,combining with the data obtained from the geological description of cores,coal-petrologic identification and coal quality analysis and so on,the better effect is obtained in the comprehensive qualitative classification of coal species.