Issue |
E3S Web Conf.
Volume 60, 2018
Ukrainian School of Mining Engineering
|
|
---|---|---|
Article Number | 00025 | |
Number of page(s) | 7 | |
DOI | https://doi.org/10.1051/e3sconf/20186000025 | |
Published online | 16 October 2018 |
Specifics of hydro-loosening of coal seams with account of rocks displacement parameters
Institute of Geotechnical Mechanics under the National Academy of Science of Ukraine, 2a Simferopolska St., 49005 Dnipro, Ukraine
* Corresponding author: avalansh@ua.fm
The analysis of efficiency decline of methods for hydraulic influence on outburst-prone coal seams in the conditions of large depths is represented. The models are considered for parameters calculation of high-pressure liquid injection, based on the hypotheses of the stress-strain state formation of the coal seam; the patterns of rock pressure manifestation as well as calculation discrepancy between the liquid injection pressure and the terms of large depths, are established. It is shown that in the parameters calculation of the high-pressure liquid injection, it is necessary to take the height of the column of rocks which lost their integrity and form the stratification zone in the underworked massif instead of depth Н of the seam mining. It has been established that the efficiency of hydro-loosening depends not only on the injection pressure, but also on the location of borehole filtration part relative to the maximum of abutment zone.
© The Authors, published by EDP Sciences, 2018
This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.