Authors: E.N. Kozyreva, M.V. Shinkevich

Title of the article: Ventilation and degassing in the extraction panel with intensive methane release from the mined seam and enclosing strata

Year: 2017, Issue: 4, Pages: 28-36

Branch of knowledge: Earth sciences

Index UDK: 622.831

DOI: 10.26730/1999-4125-2017-4-28-36

Abstract: Inaccurate forecast of the expected gas content in mine workings according to the standards creates difficulties at coal underground mines when there is an intensive gas emission from the developed seam and adjacent strata. This does not allow providing efficient ventilation and degassing of the panel. The solution of this task requires development of scientific bases of safe and highly efficient coal mining. The development is based on the model of development of non-linear geomechanical processes in the rock mass. The model consid-ers the stratigraphy of the rock panel, the depth of mining operations and the geometrical dimensions of the extraction panel. The article suggests the method of predicting the methane content dynamics of the high-productive extraction panel No. 567 of the mine Chertinskaya-Koksovaya and methods of its management, in-cluding ventilation of panel via the gas-drainage drift, degassing of the undermined massif by boreholes drilled from parallel drifts and by directional drilling wells, and degassing of the developed seam via the wells of the focused hydraulic fracturing. The study allowed us to establish connection of methane content in the goaf with the rate of working face advance; the sources of methane content on the goaf and the parameters of its management methods were specified; the technological solutions on integrated management of gas emission uniting the combined scheme of ventilation and degassing of the mined area and the developed seam were developed.

Key words: coal seam panel working face methane-bearing capacity forecast ventilation gas potentials mined goaf

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