| Issue |
E3S Web Conf.
Volume 129, 2019
1st International Scientific Conference “Problems in Geomechanics of Highly Compressed Rock and Rock Massifs” (GHCRRM 2019)
|
|
|---|---|---|
| Article Number | 01003 | |
| Number of page(s) | 6 | |
| DOI | https://doi.org/10.1051/e3sconf/201912901003 | |
| Published online | 08 November 2019 | |
Effect of bifurcation in physicochemical parameters on outburst hazard of coal seams
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, 660091 Novosibirsk, Russia
* Corresponding author: coalmetan@mail.ru
The paper considers interaction between gas-kinetic and physicochemical parameters in coal seams, which conditions coal and gas outbursts. The laboratory and field test data on interaction between geomechanical and physicochemical processes in coal seams are presented for various rank of coals from Kuzbass. The areas of higher coal and methane outburst hazard feature bifurcation in porosity, moisture content and methane absorption of coal from different operating mines in the Kuznetsk, Donets and Lvov–Volyn Basins. Bifurcation consists in the alteration of gradients of these values. At the bifurcation point of these parameters, a coal-and-methane seam can generate a disturbing gas-dynamic impulse sufficient for coal self-destruction. This property explains unexpected nature of coal and gas outbursts.
Key words: bifurcation / outburst hazard / coal / absorption / methane content / moisture content / porosity / volatile yield / Langmuir equation
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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