Methodical substantiation of calculation of methane resources shut down and subjected to shutting down mines
UDC: 622.324.5
DOI: 10.33285/1999-6934-2022-4(130)-70-74
Authors:
FEDORIN VALERIY A.
1,
SHAKHMATOV VYACHESLAV YA.1,
KLISHIN VLADIMIR I.1
1 Institute of Coal of Federal Research Center of Coal and Coal Chemistry of the Siberian Branch of the RAS, Kemerovo, Russia
Keywords: methane resources, mass-transfer theory, gas emission, reserves evaluation
Annotation:
The methodology of evaluating methane reserves in a worked out space of a mine has been developed in the Institute of Coal of the Federal Research Center of Coal and Coal Chemistry of the Siberian Branch of the Russian Academy of Sciences. The methodology covers the calculation of methane diffusion into the worked out space of shut down coal mines according to the criterion for dangerous state of industrial and accommodation facilities on the surface of a mining unit subjected to liquidation. Based on the mass transfer theory according to filtering mechanism and gas diffusion, the volume of free methane within the limits of mining units of the shut-down mine "Tsentralnaya" (2nd region) and closed down mine "Severnaya" (1st region) up to the depth of 360 meters from the surface was calculated. These mining units regions are situated on the territory of Kemerovo city and, according to the fulfilled calculations; they contain 50 million m3 of free methane. The reserves of the occluded methane in coal seams are evaluated as 1292 million m3, and 10 per cent of them are considered industrially extractable.
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