Calculation Procedure for Permissible Load on Coal Production Face by Gas Factor
S. V. SLASTUNOV1, G. G. KARKASHADZE1, K. S. KOLIKOV1, G. P. ERMAK2
1Moscow State Mining University, Lenisnkii pr. 6, Moscow, 119991 Russia
2Department for Supervision in Coal Industry Federal Environmental, Industrial and Nuclear Supervision Service of Russia (ROSTEKHNADZOR), ul. A. Luk’yanova 4, Build. 1, Moscow, 105066 Russia
Keywords: coal, methane, methane content, pressure, absorption, mass transfer, permissible load
Abstract
The offered calculation procedure of the permissible load on a production face by gas factor is based on the equation of methane emission in the production face area from coal and roof and floor rocks. The model includes permeability and absorption of coal, porosity and thickness of coal seam, production face length, methane pressure and the operational safety-permitted methane concentration in the return ventilation air. The model implementation will help in validation of scheduled loading on production faces in coal mines.
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