Gas emission trends in production faces

V.N. Kosterenko, R.O. Smirnov, Z.V. Aksyonov

The authors analyze the experimental evidence on the relation of gas emission rates in production faces and stress-strain behavior of the rock mass face area. Rock has been monitored by parameter of the artificial acoustic wavelet, coefficient of relative strains K and spectrum resonance frequencies. Equations for K coefficient dependence and methane concentration in the return air have been developed. The respective correlation ratios, regression equations and determination factors have been calculated.

Key words: rock mass stress-strain behavior, gas emission in production faces, top rock caving

Mining Industry Journal №2 (144) 2019, p.52-55