E3S Web Conf.
Volume 129, 20191st International Scientific Conference “Problems in Geomechanics of Highly Compressed Rock and Rock Massifs” (GHCRRM 2019)
|Number of page(s)||8|
|Published online||08 November 2019|
Estimating the rockburst hazard of hard rocks based on laboratory test results
1 MI FEB RAS, Laboratory of the digital methods research of natural and technical systems, 680000 Turgeneva st., 51, Khabarovsk, Russia
2 MI KSC RAS, Laboratory of Geomechanics, 184209 Fersman st., 24, Apatity, Russia
* Corresponding author: email@example.com
The results of laboratory tests of samples are used to estimate rock proneness to dynamic fractures, in particular, by brittleness index. A common drawback of the approaches in use is that they do not expressly consider the main condition of dynamic rock fracture – rock mass ability to accumulate energy when loaded. The article discusses the results of studies of the nature of elastic energy accumulation during loading and deformation of samples of various rocks under uniaxial compression in order to assess the degree of their explosion. The approach is original as it studies the deformation curve of rocks at the pre-peak stage that may be obtained with any standard equipment without the use of special-purpose test (“rigid”) devices. Results of the studies conducted on standard test devices have allowed us to identify two different deformation patterns for the rock type tested with further establishment of criteria of rock classification by the degree of proneness to dynamic fractures. This approach is of practical value as it specifies the geomechanics zoning method of the rock mass and improves the assessment of rockburst hazard degree of specific areas at deposits being developed.
© 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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