METHOD OF DETERMINATION OF COAL MASS GAS CONTENT IN ZONE OF ITS DESTRUCTION Russian patent published in 2015 - IPC E21C39/00 

FIELD: instrumentation.

SUBSTANCE: invention relates to mining, mainly to coal industry. Method is suggested to determine gas content of the coal mass in zone of its destruction, including the shift-based working hours of the coal production cut face, course treatment by the longitudinal straps, measurement of intensity of gas evolution from the treated course per the production shift, and determination of the index of intensity rise of the gas evolution to the face space of the longwall face during the coal destruction. At that the intensity of gas evolution from the course is measured during removal of the first and second coal straps after the repair shift, at that the gas content of the coal mass in the zone of its destruction is determined as per the provided mathematical expression.

EFFECT: suggested method ensures determination of the reliable value of the gas content of the coal mass in zone of its destruction due to the direct measurements of the intensity of gas evolution from the course in the face space.