Questions of evaluation of the efficiency of activities to exclude the possibility of stocking mining processes when the roof disturbed

Mineyev S.P., Kocherga V.N., Prusova A.A., Golovko Yu.I., Yanzhula A.S., Gulay A.A.

Authors:

Mineev S.P., D. Sc. (Tech.), Professor (IGTM NAS of Ukraine),
Kocherga V.N., engineer (IGTM NAS of Ukraine),

Prusova A.A., Ph. D. (Tech.), Senior Researcher (IGTM NAS of Ukraine),
Golovko Yu.I., M.S. (Tech.) (Mine management “Pokrovskoye”),
Yanzhula A.S., M.S. (Tech.) (Mine management “Pokrovskoye”),
Gulay A.A., M.S. (Tech.) (Mine management “Pokrovskoye”)

UDC 622.411.322

Language: Russian

Abstract.

It is stated that roof rock fall is usually accompanied with intensive methane release from the unloaded coal seams and rocks to the goafs through the roof and foot of the worked seam. When gas bursts out from the roof, methane emission may significantly increase and reach maximum values during relatively short period of time. Then the gas flow rate is gradually decreases. Geological criteria are proposed, and method is developed for forecasting pulse gassing of the roadways at the roof fall. The degassing methods are validated for the gas-saturated structures near zones with geological disturbances at initial main roof caving, and are recommended to use while building methane drainage boreholes drilled from the mine roadways and the surface. Methodology is proposed for working out measures to prevent sudden pulse gassing of the roadways at the main roof fall in areas with geological faults. The developed methods were successfully tested in the mines and demonstrated good effectiveness of the measures aimed to exclude possible gassing of the roadways at the roof rock fall.

Keywords:

sudden release of methane, main roof caving, gassing, sandstone, geological faults, borehole, efficiency

References:

1. Bulat, A.F. (2003), “The concept of complex degassing of the coal-bearing massif at the mine named after A.F. Zasyadko”, Geo-Technical Mechanics, no. 42, pp. 3-9.

1. Kocherga, V.N. (2005), Razrabotat metodiku prognoza opasnosti gazovydeleniya vo vremya obrusheniya porod osnovnoy krovli v zonakh geologicheskikh narusheniy i meropriyatiya po predotvrashcheniyu zagazirovaniya gornykh vyrabotok [To develop a methodology for forecasting the danger of gas evolution during the collapse of rocks of the main roof in the zones of geological disturbances and measures to prevent the excavation of mine workings], Makeyevka, Ukraine.

2. Mineev, S.P., Kocherga, V.N. and Yanzhula, A.S. (2015), “Regularities of methane evolution at high rates of movement of the clearing face”, Ugol’ Ukrainy, no. 7-8, pp. 26-31.

3. Mineev, S.P., Prusova, A.A., Potapenko, A.A. and Kocherga, V.N. (2014), “Evaluation of the possibility of pulsed separation of sorbed methane from a coal seam”, Ugol’ Ukrainy, no. 10, pp. 31-36.

4. Mineev, S.P., Kocherga, V.N., Yanzhula, A.S. and Gulay, A.A. (2016), “The main parameters of the forecast of pulsed methane emissions in the zones of geological disturbances”, Ugol’ Ukrainy, no. 3, pp. 25-32.

5. Ministry of Energy of Ukraine (2005), SOU 10.1.00174088.001-2004. Degazatsiya ugolnykh shakht. Trebovaniya k sposobam i skhemy degazatsii [SOU 10.1.00174088.001-2004. Degassing of coal mines. Requirements for methods and schemes of degassing], Minugleenergoprom Ukrainy, Kiev, Ukraine.

6. Sofiyskiy, K.K., Zhitlenok, D.M., Petukh, A.P. (et al.) (2014), Sposoby intensifikatsii degazatsii ugolnykh plastov i predotvrashcheniya vybrosov uglya i gaza [Ways of intensification of degassing of coal seams and prevention of coal and gas emissions], Skhídniy vidavnichiy dím, Donetsk, Ukraine.

About the authors:

Mineev Sergey Pavlovich, Doctor of Technical Sciences (D. Sc.), Professor, Head of the department, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Sciences of Ukraine (IGTM, NASU), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Kocherga Viktor Nikolayevich, engineer, Chief Technologist, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Sciences of Ukraine (IGTM, NASU), Dnipro, Ukraine

Prusova Alla Andreyevna, Candidate of Technical Sciences (Ph. D.), Senior Researcher, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Sciences of Ukraine (IGTM, NASU), Dnipro, Ukraine

Golovko Yuri Ivanovich, engineer, Director of Mine Management “Pokrovskoye”, Pokrovsk, Donetsk region, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Yanzhula Aleksey Sergeevich, engineer, Chief Engineer of Mine Management “Pokrovskoye”, Pokrovsk, Donetsk region, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Gulay Aleksey Aleksandrovich, engineer, Head for ventilation and technique of safety of Mine Management “Pokrovskoye”, Pokrovsk, Donetsk region, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.