DEGASSING OF ROCKS DISTURBED BY MINING OPERATIONS BEHIND THE LONGWALL

Details

Parent Category: Geo-Technical Mechanics, 2014

Category: Geo-Technical Mechanics, 2014, Issue 114

UDC622.831.325.3

Author

S.A. Kurnosov, D.Sc. (Tech.), Senior Reseacher

(IGTM NASU),

Abstract.

Subject of the research is regularity of the rock stress-strain state and roads for methane migration changes induced by mining operations. Purpose of the research is to disclose mechanism and regularities of the gas-saturated rock destruction behind the longwall and to work out recommendations for specifying rational parameters for the degassing holes. Basing of the results of experimental studies in mines, regularities of the rock stress-strain state changes behind the longwall in the previously mined panels, panels being currently under the mining operations and in the panel ends were established. Basing on these regularities, a mechanism of the rock destruction, roads of methane migration, zones of methane accumulation were specified and calculation methods of rational parameters for the degassing holes were designed. Practical importance of the findings lies in possibility to specify parameters for the degassing hole boring with taking into account regular methane migration in the rock mass under the impact of mining operations and to make rational technical decisions on improving degassing effectiveness.

Key words:

rock destruction, roads for methane migration, degassing.

References:

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About the author

Kurnosov Sergey Anatolyevich, Doctor of Technical Sciences (D.Sc.), Senior Researcher, Senior Researcher in the Department of Mineral Mining at Great Depths of M.S. Polyakov Institute of Geotechnical Mechanics of the NAS of Ukraine (IGTM NASU), Dnepropetrovsk, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

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