| Issue |
E3S Web Conf.
Volume 315, 2021
VIth International Innovative Mining Symposium
|
|
|---|---|---|
| Article Number | 01021 | |
| Number of page(s) | 7 | |
| Section | Environment Saving Mining Technologies | |
| DOI | https://doi.org/10.1051/e3sconf/202131501021 | |
| Published online | 28 October 2021 | |
Analysis of seismic tomography data for definition of hydraulic fracturing parameters in underground coal mines
1 T.F. Gorbachev Kuzbass State Technical University
2 Federal State Budget Scientific Centre «The Federal Research Center of Coal and Coal-Chemistry of Siberian Branch of the Russian Academy of Sciences)
* Corresponding author: routgn@kuzstu.ru
The article analyzes the issue of reliable estimate of the unloading extent and the variation order of coal-rock massif geomechanical characteristics as a result of hydraulic fracturing undertaken from mine workings. For this purpose it is proposed to use the fracturing value of the studied rock mass. In case the possibility of comparison with geological and actual data doesn’t exist, the option of using the rock mass classification based on the estimated value of geophysical index that specifies rock mass fracturing is considered. To address the issue, a geophysical survey of the active roof at the excavation site in the operating coal mine was implemented with a method of a seismic radioscopy before and after hydraulic fracturing. According to the results of seismic exploration, a massif unloading degree and an extent of roof fracturing has been determined.
© The Authors, published by EDP Sciences, 2021
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